Gregory, J. N. The world of radioisotopes / J.N. Gregory. - Sydney : Angus and Robertson in association with the Australian Atomic Energy Commission, 1966. - xvii, 204 p. : ill. ; 25 cm. Includes index. "Publications on radiation safety": p. 188. Subjects--Topical Terms: Radioisotopes--Industrial applications. Dewey Class. No.: 541.3884 / GRW 1966