Introduction to Radiochemistry BY Gerharf Friedlander. PREFACE: An increasing number of universities are offering courses in radioactivity for chemists. Very likely many teachers and stu dents in these courses feel as we do that there has been no suitable textbook for this purpose. There is the very excellent Manual of Radioactivity by G. Hevesy and F. A. Paneth however, advances in the science since its last edition, in 1938, have been more than...