| 430 / | HD | RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF |
| 495.1 | DF | RADIATION SENSITIVE PRODUCT {7} |
| 564 | DF | .~ Silver compound sensitizer containing {18} |
| 621 | DF | .~.~ Hardening ingredient containing {2} |
| 623 | | .~.~.~ Heterocyclic compound {3} |
| 624 | DF | .~.~.~.~> Epoxide, i.e., oxirane |
| 625 | DF | .~.~.~.~> Aziridine |
| 626 | DF | .~.~.~.~> Triazine including hydrogenated triazine |