Extension of the principles of radiation protection to sources of potential exposure. - Vienna IAEA 1990 - [4], 30 p. 26 cm. - IAEA Safety series ; no. 104. 0074-1892 International Atomic Energy Agency. Safety series ; no. 104. 0074-1892 . Includes bibliographical references ISBN: 9201235909 Subjects--Topical Terms: Radiation--Dosage.Radiation--Safety measures. Dewey Class. No.: 539.2 EXT 1990