Understanding quantum mechanics; an introduction to the abstract formalism and the basic ideas of quantum mechanics [by] Gordon Troup. Troup, G. J. (Gordon John) Quantum theory. QC174 .T72 530.12 19 TRU "Distributed in U.S.A. by Barnes & Noble." Bibliography: p. [84] London, Methuen, 1968. 1968. 1968 Text ix, 86 p. eng