D'Souza, I. A. Preons : models of leptons, quarks and gauge bosolns as composite objects / by I. A. D'Souza and C. S. Kalman. - New Jersey : World Scientific, c1992. - 108 p. : ISBN: 9810210191 Subjects--Topical Terms: Nuclear Physics Dewey Class. No.: 539.7 / Pr