Hopper, V. D. 1913- Cosmic radiation and high energy interactions / V. D. Hopper - Great Britain : Logos Press, c1964 - x, 234 p. : ill. ; 23 cm. - Logos press scientific monographs on physics . Includes bibliographical references and index Subjects--Topical Terms: Cosmic raysNuclear reactions Dewey Class. No.: 539.722