Bethe, H. A. 1906-2005. Elementary nuclear theory / Hans A. Bethe and Philip Morrison. - 2d ed. - New York : Wiley, 1956 [printing 1961] - 274 p. : ill. ; 24 cm. Includes index Subjects--Topical Terms: Nuclear physics. Dewey Class. No.: 539.7 / BEE 1956