| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 187 | DD | COOLING ARRANGEMENTS WITHIN THE PRESSURE VESSEL CONTAINING THE CORE; SELECTION OF SPECIFIC COOLANTS [G21C-15/00] {7} |
| DIG 199 | DD | .~ Promoting flow of the coolant [G21C-15/24] {4} |
| DIG 204 | | .~.~ Heat-pipes [G21C-15/24F] |