International Atomic Energy Agency, Vienna (Austria). International Nuclear Data Committee; Gosudarstvennyj Komitet po Ispol'zovaniyu Atomnoj Ehnergii SSSR, Moscow; p. 1; May 1978; p. 1; Paper submitted to the scientific and technical publication ''Yadernye konstanty'' (Nuclear constants), No. 20. Translated from Russian. Published in summary form only.