BNL 50797 UC-41 (Health and Safety - TID-4500) EXTERNAL RADIATION SURVEY AND DOSE PREDICTIONS FOR RONGELAP, UTIRIK, RONGERIK, AILUK, AND WOTJE ATOLLS N.A. Greenhouse and R.P. Miltenberger at December 13, 1977 BROOKHAVEN UPTON, NATIONAL NEW LABORATORY YORK 11973