Richtmyer, F. K.etal Introduction to modern physics/ by F. K. Richtmyer, E. H. Kennard and John N. Cooper. - 6th ed. - New York, : McGraw-Hill ,1969 - xvi, 767 p. illus., ports. Bibliographical footnotes. Subjects--Topical Terms: Physics. Dewey Class. No.: 530 RIC/I