| 376 / | HD | INDUCED NUCLEAR REACTIONS: PROCESSES, SYSTEMS, AND ELEMENTS |
| 347 | DF | REACTOR STRUCTURES {7} |
| 354 | DF | .~ Fuel material in contact with and supported by fluid {3} |
| 359 | ![]() | .~.~ Fuel in molten state or in molten vehicle {1} |
| 360 | DF | .~.~.~> Fuel in form of fused salt |