Anguma, Simon K. Determination of K-40, U-238, Th-232 activity levels in Lake Victori a and Kyoga and in their biota - (fish and water hyacinth) / Anguma Simon K. - Kampala , 1999. - xii, 134 p. : ill. ; 30 cm. Thesis (M.Sc. Physics) - Makerere University, 1999 Includes bibliographical references (p. 120-122) Subjects--Topical Terms: Water hyacinth--Uganda.Fishes--Uganda. Dewey Class. No.: U 584.324 ANG