| C | Sektion C — Chemie; Hüttenwesen | CHEMISTRY; METALLURGY | |
 | C05 | Düngemittel; deren Herstellung [4] | FERTILISERS; MANUFACTURE THEREOF [4] |
 | C05B | Phosphatische Düngemittel | PHOSPHATIC FERTILISERS |
 | C05B 17/00 | Andere phosphatische Düngemittel, z.B. weiche Gesteinsphosphate, Knochenmehl [1, 2006.01] | Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal [1, 2006.01] |