| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 5 | | NUCLEAR REACTORS [G21C-1/00] *** (fusion reactors H05H-1/00; nuclear explosives DIG. 423; analogue computers therefor G06G-7/54) {4} |
| DIG 6 | DD | .~> Integral reactors (i.e., the reactor core and the heat exchanger are placed in one vessel; the reactor vessel and the heat exchanger form an integral construction) [G21C-1/00B] {4} |
| DIG 11 | DD | .~> Fast fission reactors (i.e., reactors not using a moderator; metal cooled reactors; fast breeders) [G21C-1/02] {3} |
| DIG 16 | DD | .~> Thermal reactors; Epithermal reactors [G21C-1/04] {2} |
| DIG 34 | DD | .~> Subcritical reactors; Experimental reactors with exception of swimming-pool reactors, zero-energy reactors [G21C-1/30] {2} |