Gasser, R. P. H. Entropy and energy levels / [by] R. P. H. Gasser and W. G. Richards. - Oxford : Clarendon Press, 1974. - xii, 137 p. : ill. ; 23 cm. - Oxford chemistry series ; 19 . Includes index. Bibliography: p. [131]-132. ISBN: 0194424111 Subjects--Topical Terms: Energy levels (Quantum mechanics) LC Class. No.: QD 511 / .G37 1974