| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 99 | | MODERATOR OR CORE STRUCTURE; SELECTION OF MATERIALS FOR USE AS MODERATOR [G21C-5/00] {4} |
| DIG 100 | DD | .~> Details [G21C-5/02] {4} |
| DIG 105 | DD | .~> Characterized by composition (e.g., the moderator containing additional substances which ensure improved heat resistance of the moderator [G21C-5/12] *** (purification of fluid moderators during the operation of the reactor DIG. 266) {2} |
| DIG 108 | DD | .~> Characterized by shape [G21C-5/14] {1} |
| DIG 110 | DD | .~> Characterized by the provision of more than one active zone [G21C-5/18] {2} |