Powell, C.F. The Study of Elementary Particlies by the photographic Methud : an acount of the principal techniques and discoveries illustrated by an atlas photomicrographs / by C.F. Powell , P.H. Fowler and D.H. Parkins - 669 p. : ill ; 29 cm Includes Index Subjects--Topical Terms: Sub atomic particle Dewey Class. No.: 539.721 / POS 1959