| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 99 | DD | MODERATOR OR CORE STRUCTURE; SELECTION OF MATERIALS FOR USE AS MODERATOR [G21C-5/00] {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 106 | | .~.~ Moderators made of organic materials [G21C-5/12B] |