| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 152 | DD | SHEILDING STRUCTURALLY ASSOCIATED WITH THE REACTOR [G21C-11/00] {3} |
| DIG 153 | DD | .~ Biological sheilding; Neutron and gamma shielding [G21C-11/02] *** (in general DIG. 319+) {4} |
| DIG 156 | | .~.~ In apertures or channels through a wall [G21C-11/02D] |