| 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 323 | | .~.~ Concretes; Other hydraulic hardening materials [G21F-1/04] {1} |
| DIG 324 | DD | .~.~.~> Combined with other materials dispersed in the carrier [G21F-1/04B] {2} |