Radioisotopes for aerospace. Proceedings of the 1.Symposium on radioisotope applications in aerospace, sponsored jointly by the U.S.air force, the Ü.S.atomic energy commission, and Instrument society of j America, held in Dayton,Ohio 1966. Ed.by J.C.Dempsey and P.Polishuk. Ed.assistant : L.Slaminko. Part 1-2.