| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 1 | DD | ALLEGED CONTROLLED FUSION REACTORS (G21B-1/00) ** (uncontrolled reactors DIG. 423; arrangements for heating or confining plasma H05H-1/02) {3} |
| DIG 2 | | .~ Combined fission-fusion reactors [G21B-1/00B] *** (see also DIG. 5+) |