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A
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SECTION A — HUMAN NECESSITIES
B
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SECTION B — PERFORMING OPERATIONSTRANSPORTING
C
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SECTION C — CHEMISTRYMETALLURGY
C01
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CHEMISTRY
C01
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INORGANIC CHEMISTRY
C02
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TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C03
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GLASSMINERAL OR SLAG WOOL
C04
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CEMENTSCONCRETEARTIFICIAL STONECERAMICSREFRACTORIES [4]
C05
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FERTILISERSMANUFACTURE THEREOF [4]
C06
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EXPLOSIVESMATCHES
C07
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ORGANIC CHEMISTRY [2]
C08
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ORGANIC MACROMOLECULAR COMPOUNDSTHEIR PREPARATION OR CHEMICAL WORKING-UPCOMPOSITIONS BASED THEREON
C09
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DYESPAINTSPOLISHESNATURAL RESINSADHESIVESCOMPOSITIONS NOT OTHERWISE PROVIDED FORAPPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09B
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ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYESMORDANTSLAKES (fermentation or enzyme-using processes to synthesise a desired chemical compound C12P)
C09C
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TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (preparation of inorganic compounds or non-metallic elements C01; treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B 14/00, C04B 18/00, C04B 20/00)PREPARATION OF CARBON BLACK [4]
C09D
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COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERSFILLING PASTESCHEMICAL PAINT OR INK REMOVERSINKSCORRECTING FLUIDSWOODSTAINSPASTES OR SOLIDS FOR COLOURING OR PRINTINGUSE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K 5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K 3/10; materials for stopping leaks C09K 3/12; processes for the electrolytic or electrophoretic production of coatings C25D) [5]
C09F
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NATURAL RESINSFRENCH POLISHDRYING-OILSDRIERS (SICCATIVES)TURPENTINE
C09G
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POLISHING COMPOSITIONS OTHER THAN FRENCH POLISHSKI WAXES
C09H
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PREPARATION OF GLUE OR GELATINE
C09J
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ADHESIVESNON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERALADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHEREUSE OF MATERIALS AS ADHESIVES (surgical adhesives A61L 24/00; adhesives on the basis of non specified organic macromolecular compounds used as bonding agents in layered products B32B; labelling fabrics or comparable materials or articles with deformable surface using adhesives and thermo-activatable adhesives respectively B65C 5/02, B65C 5/04;  preparation of glue or gelatine C09H; adhesive labels, tag tickets or similar identification of indication means G09F 3/10) [5]
C09K
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MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FORAPPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09K 3/00
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Materials not provided for elsewhere [2]
C09K 5/00
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Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerantsMaterials for the production of heat or cold by chemical reactions other than by combustion [2]
C09K 8/00
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Compositions for drilling of boreholes or wellsCompositions for treating boreholes or wells, e.g. for completion or for remedial operations [2006.01]
C09K 8/02
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Well-drilling compositions [2006.01]
C09K 8/03
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. . Specific additives for general use in well-drilling compositions [2006.01]
C09K 8/035
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. . . Organic additives [2006.01]
C09K 8/04
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. . Aqueous well-drilling compositions [2006.01]
C09K 8/05
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. . . containing inorganic compounds only, e.g. mixtures of clay and salt [2006.01]
C09K 8/06
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. . . Clay-free compositions (containing inorganic compounds only C09K 8/05) [2006.01]
C09K 8/08
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. . . . containing natural organic compounds, e.g. polysaccharides, or derivatives thereof [2006.01]
C09K 8/10
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. . . . . Cellulose or derivatives thereof [2006.01]
C09K 8/12
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. . . . containing synthetic organic macromolecular compounds or their precursors [2006.01]
C09K 8/14
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. . . Clay-containing compositions (containing inorganic compounds only C09K 8/05) [2006.01]
C09K 8/16
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. . . . characterised by the inorganic compounds other than clay [2006.01]
C09K 8/18
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. . . . characterised by the organic compounds [2006.01]
C09K 8/20
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. . . . . Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives [2006.01]
C09K 8/22
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. . . . . Synthetic organic compounds [2006.01]
C09K 8/24
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. . . . . . Polymers [2006.01]
C09K 8/26
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. . . Oil-in-water emulsions [2006.01]
C09K 8/28
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. . . . containing organic additives [2006.01]
C09K 8/32
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. . Non-aqueous well-drilling compositions, e.g. oil-based [2006.01]
C09K 8/34
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. . . Organic liquids [2006.01]
C09K 8/36
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. . . Water-in-oil emulsions [2006.01]
C09K 8/38
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. . Gaseous or foamed well-drilling compositions [2006.01]
C09K 8/40
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Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses [2006.01]
C09K 8/42
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Compositions for cementing, e.g. for cementing casings into boreholesCompositions for plugging, e.g. for killing wells (compositions for plastering borehole walls C09K 8/50) [2006.01]
C09K 8/44
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. . containing organic binders only [2006.01]
C09K 8/46
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. . containing inorganic binders, e.g. Portland cement [2006.01]
C09K 8/467
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. . . containing additives for specific purposes [2006.01]
C09K 8/473
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. . . . Density reducing additives, e.g. for obtaining foamed cement compositions [2006.01]
C09K 8/48
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. . . . Density increasing or weighting additives [2006.01]
C09K 8/487
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. . . . Fluid loss control additivesAdditives for reducing or preventing circulation loss [2006.01]
C09K 8/493
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. . . . Additives for reducing or preventing gas migration [2006.01]
C09K 8/50
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Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls [2006.01]
C09K 8/502
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. . Oil-based compositions [2006.01]
C09K 8/504
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. . Compositions based on water or polar solvents (C09K 8/502 takes precedence) [2006.01]
C09K 8/506
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. . . containing organic compounds [2006.01]
C09K 8/508
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. . . . macromolecular compounds [2006.01]
C09K 8/512
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. . . . . containing cross-linking agents [2006.01]
C09K 8/514
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. . . . . of natural origin, e.g. polysaccharides, cellulose (C09K 8/512 takes precedence) [2006.01]
C09K 8/516
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. . characterised by their form or by the form of their components, e.g. encapsulated material [2006.01]
C09K 8/518
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. . . Foams [2006.01]
C09K 8/52
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Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning [2006.01]
C09K 8/524
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. . organic depositions, e.g. paraffins or asphaltenes [2006.01]
C09K 8/528
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. . inorganic depositions, e.g. sulfates or carbonates [2006.01]
C09K 8/532
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. . . Sulfur [2006.01]
C09K 8/536
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. . characterised by their form or by the form of their components, e.g. encapsulated material [2006.01]
C09K 8/54
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Compositions for in situ inhibition of corrosion in boreholes or wells [2006.01]
C09K 8/56
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Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof [2006.01]
C09K 8/565
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. . Oil-based compositions [2006.01]
C09K 8/57
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. . Compositions based on water or polar solvents (C09K 8/565 takes precedence) [2006.01]
C09K 8/575
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. . . containing organic compounds [2006.01]
C09K 8/58
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Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids [2006.01]
C09K 8/582
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. . characterised by the use of bacteria [2006.01]
C09K 8/584
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. . characterised by the use of specific surfactants [2006.01]
C09K 8/588
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. . characterised by the use of specific polymers [2006.01]
C09K 8/592
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. . Compositions used in combination with generated heat, e.g. by steam injection [2006.01]
C09K 8/594
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. . Compositions used in combination with injected gas (C09K 8/592 takes precedence) [2006.01]
C09K 8/60
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Compositions for stimulating production by acting on the underground formation [2006.01]
C09K 8/62
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. . Compositions for forming crevices or fractures [2006.01]
C09K 8/64
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. . . Oil-based compositions [2006.01]
C09K 8/66
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. . . Compositions based on water or polar solvents (C09K 8/64 takes precedence) [2006.01]
C09K 8/68
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. . . . containing organic compounds [2006.01]
C09K 8/70
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. . . characterised by their form or by the form of their components, e.g. foams [2006.01]
C09K 8/72
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. . . Eroding chemicals, e.g. acids [2006.01]
C09K 8/74
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. . . . combined with additives added for specific purposes [2006.01]
C09K 8/76
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. . . . . for preventing or reducing fluid loss [2006.01]
C09K 8/78
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. . . . . for preventing sealing [2006.01]
C09K 8/80
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. . Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open [2006.01]
C09K 8/82
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. . Oil-based compositions (C09K 8/64 takes precedence) [2006.01]
C09K 8/84
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. . Compositions based on water or polar solvents (C09K 8/66, C09K 8/82 take precedence) [2006.01]
C09K 8/86
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. . . containing organic compounds [2006.01]
C09K 8/88
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. . . . macromolecular compounds [2006.01]
C09K 8/90
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. . . . . of natural origin, e.g. polysaccharides, cellulose [2006.01]
C09K 8/92
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. . characterised by their form or by the form of their components, e.g. encapsulated material (C09K 8/70 takes precedence) [2006.01]
C09K 8/94
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. . . Foams [2006.01]
C09K 9/00
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Tenebrescent materials, i.e. materials for which the range of wavelengths for energy adsorption is changed as a result of excitation by some form of energy [2]
C09K 11/00
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Luminescent, e.g. electroluminescent, chemiluminescent, materials [2]
C09K 13/00
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Etching, surface-brightening or pickling compositions [2]
C09K 15/00
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Anti-oxidant compositionsCompositions inhibiting chemical change [4]
C09K 17/00
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Soil-conditioning materials or soil-stabilising materials [3]
C09K 19/00
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Liquid crystal materials [4]
C09K 21/00
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Fireproofing materials [4]
C09K 101/00
Indexing scheme associated with group C09K 17/00, relating to the use or the intended effect of the soil-conditioning or soil-stabilising materials. [6]
C09K 101/00
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Agricultural use [6]
C09K 103/00
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Civil engineering use [6]
C09K 105/00
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Erosion prevention [6]
C09K 107/00
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Impermeabilisation [6]
C09K 109/00
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pH regulation [6]
C10
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PETROLEUM, GAS OR COKE INDUSTRIESTECHNICAL GASES CONTAINING CARBON MONOXIDEFUELSLUBRICANTSPEAT
C11
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ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXESFATTY ACIDS THEREFROMDETERGENTSCANDLES
C12
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BIOCHEMISTRYBEERSPIRITSWINEVINEGARMICROBIOLOGYENZYMOLOGYMUTATION OR GENETIC ENGINEERING
C13
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SUGAR INDUSTRY [4]
C14
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SKINSHIDESPELTSLEATHER
C21
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METALLURGY
C21
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METALLURGY OF IRON
C22
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METALLURGYFERROUS OR NON-FERROUS ALLOYSTREATMENT OF ALLOYS OR NON-FERROUS METALS
C23
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COATING METALLIC MATERIALCOATING MATERIAL WITH METALLIC MATERIALCHEMICAL SURFACE TREATMENTDIFFUSION TREATMENT OF METALLIC MATERIALCOATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERALINHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL [2]
C25
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ELECTROLYTIC OR ELECTROPHORETIC PROCESSESAPPARATUS THEREFOR [4]
C30
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CRYSTAL GROWTH [3]
C40
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COMBINATORIAL TECHNOLOGY [2006.01]
C40
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COMBINATORIAL TECHNOLOGY [2006.01]
C99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
D
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SECTION D — TEXTILESPAPER
E
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SECTION E — FIXED CONSTRUCTIONS
F
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SECTION F — MECHANICAL ENGINEERINGLIGHTINGHEATINGWEAPONSBLASTING
G
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SECTION G — PHYSICS
H
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SECTION H — ELECTRICITY

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