TY - BOOK AU - Mann,W.B. AU - Ayres,R.L. AU - Garfinkel,S.B. TI - Radioactivity and its measurement SN - 0080250270 (pbk.) : AV - QC795 .M242 1980 U1 - 539.75 MAN 1980 CY - New York KW - Radioactivity N1 - Includes indexes; Bibliography: p. 274 ER -