| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 315 | DD | ARRANGEMENTS FOR DIRECT PRODUCTION OF ELECTRIC ENERGY FROM FUSION OR FISSION REACTIONS [G21D-7/00] *** (obtaining electric energy from radioactive sources DIG. 410) {2} |
| DIG 316 | | .~ Using magneto-hydrodynamic generators [G21D-7/02] |