Robertson, John Kellock. Radiology physics : an introductory course for radiologists, radiographers, and medical students / John Kellock Robertson. - London : Macmillan, 1956. - xvi, 330 p. : ill. ; 22 cm. Includes index. 330 330 Subjects--Topical Terms: Radiology. Dewey Class. No.: 539.752 / R547r