| Symbol | Typ | Titel | ||
|---|---|---|---|---|
| G | SK | SECTION G — PHYSICS | ||
| G21 | USK | NUCLEONICS | ||
| G21 | KL | NUCLEAR PHYSICS; NUCLEAR ENGINEERING | ||
| G21J | UKL | NUCLEAR EXPLOSIVES; APPLICATIONS THEREOF (electric or magnetic analogue computers, e.g. simulators, for nuclear physics G06G 7/54) | ||
| G21J 1/00 | HGR | Nuclear explosive devices | ||
| G21J 3/00 | HGR | Peaceful applications of nuclear explosive devices | ||
| G21J 3/02 | UGR1 |
| ||
| G21J 5/00 | HGR | Detection arrangements for nuclear explosions (individual measuring devices G01) |