The following scientists participated in the Project. Referee HENRY I. KOHN, Ph.D., M.D. (radiation biology) Emeritus of Radiation Biology, Harvard Bikini Atoll Rehabilitation Committee; CA 94709 (415-526-0141) Secretary: Gaiser Professor Medical School; Chairman, 1203 Shattuck Ave., Berkeley Irene K. Heller, Berkeley, CA Consultants S. J. ADELSTEIN, M.D., Ph.D. (nuclear medicine) Professor of Radiology, Harvard Medical School; Director of Joint Program in Nuclear Medicine at Beth Israel Hospital, Brigham and Women's Hospital, Children's Hospital and Institute, and Dana Farber Cancer Center; Vice-President, National Commission on Radiological Protection and Measurements; 25 Shattuck St., Boston, MA 02115 (617-732-1535) H. J. DUNSTER.B.Sc., C.B. (health physics) Formerly Director, National Radiological Protection Board (United Kingdom), Member, International Commission on Radiological Protection; Residence: 52 Thames St., St. Ebbes, Oxford, OX1 1SU, United Kingdom (071-44-865-251-716) A. S. KUBO, Ph.D., MBA, P.E. (civil and nuclear engineering) Vice President, Technical Applications, The BDM Corp. 7915 Jones Branch Drive, McLean VA 22102 (703-848-7294) H. G. PARETZKE, M.Sc., Ph.D. (radiation risk analysis) Head, Radiation Risk Analysis Section, GSF Institut fir Strahlenschutz (Institute for Radiation Protection), Ingolstaddter Landstrasse 1, D-8042, Neuherberg 2225 Federal Republic of Germany GE-055 (011-49-893-187-2225) F. L. PETERSON, Ph.D. (hydrology and geology) Professor of Hydrology and Chairman, Dept. of Geology and Geophysics, University of Hawaii, Honolulu, HI 96822 (808-948-7897) W. J. SCHULL, Ph.D. (epidemiology: cancer, genetics, birth defects) Director of Center for Demographic and Population Genetics and Professor of Human Genetics, Univ. of Texas Health Science Center at Houston; Formerly Director of the Radiation Research Foundation at Hiroshima-Nagasaki, Japan. Address: Population Genetics, P.O. Box 20334, Houston TX 77225 (713-792-4680)