“…Several books (21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31) containing procedures for experiments in radiochemistry have been published and numerous articles describing specific experiments, the teaching of nuclear chemistry or radiochemistry (1.9, 32~42), or uses of radioisotopes in chemistry (10,(43)(44)(45)(46)(47)(48) have appeared in this Journal. The Subcommittee on Itadiochemistry of the Committee on Nuclear Science of the National Academy of Sciences-National Research Council has issued two reports (49,50) relating directly to the teaching of radiochemistry and a series of monographs on the radiochemistry of the elements and on radiochemical techniques (51).…”