A five-man U.S.S.R. delegation visits the Lawrence Berkeley Laboratory to learn about our radiobiology work. Dr. John Lawrence Donner Laboratory Director, right shows the group the Donner facilities. Left to right: Dr. Alexander Pavlov, Moscow Stomatology Institute; Dr. Valerie Rochkarev, Institute of Biophysics and Radiation Medicine, Moscow; Dr. Cornelius Tobias, Donner Laboratory; and (in front of Dr. Tobias) Dr. Mikhail Pobedinski, Central Scientific Research Institute for Roentgenology, Radiology and Cancer, Leningrad. Next to Dr. Lawrence is State Department translator Albert Roth. The Laboratory visit was arranged by the U.S. Department of Health, Education, and Welfare, in return for