Annual report of the Argonne National Laboratory Radiological and Environmental Research Division regarding activities related to the Center for Human Radiobiology. This report discusses an inquiry into the mechanisms and dosimetry for induction of malignancies by radium, and studies of individuals exposed to radium and thorium, as well as to other radionuclides,.

Annual report of the Argonne National Laboratory Radiological and Environmental Research Division regarding activities related to ecology. This report discuses programs including a development project for microcosm screening systems, two initiatives in ecological modeling, and a program of field experiments for a national assessment of crop losses due to air pollution.

Annual report of the Argonne National Laboratory Radiological and Environmental Research Division regarding activities related to atmospheric physics. This report discusses research activities on the transport, removal and, to a lesser extent, transformation of pollutants in the lower atmosphere.