| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 5 | DD | NUCLEAR REACTORS [G21C-1/00] *** (fusion reactors H05H-1/00; nuclear explosives DIG. 423; analogue computers therefor G06G-7/54) {4} |
| DIG 34 | DD | .~ Subcritical reactors; Experimental reactors with exception of swimming-pool reactors, zero-energy reactors [G21C-1/30] {2} |
| DIG 35 | | .~.~ Experimental and irradiation arrangements inside the reactor [G21C-1/30B] *** (irradiation loops DIG. 36; material testing by neutrons G01N-23/00B) |