| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 319 | DD | SHIELDING CHARACTERIZED BY THE COMPOSITION OF THE MATERIALS [G21F-1/00] {2} |
| DIG 320 | DD | .~ Selection of uniform shielding materials [G21F-1/02] {6} |
| DIG 328 | DD | .~.~ Metals; Alloys; Cermets (i.e., sintered mixtures of ceramics and metals) [G21F-1/08] {1} |
| DIG 329 | | .~.~.~ Heavy metals or alloys [G21F-1/08B] |