jointly organized by Division of Nuclearbiology of the Assoziation of Radiation and Environmental Research mbH., Neuherberg, Institute of Radiationhygiene of the Federal Health Office, Neuherberg, and the Working Group for Radiation Biology of Deutsche Röntgengesellschaft, in cooperation with World Health Organization, Geneva, [held at] Neuherberg near Munich, 26-28 November 1980 ; edited by H. Kriegel ... [and others]