Ballhausen, Carl Johan Molecular orbital theory an introductory lecture note and reprint volume [by] C.J. Ballhausen and Harry B. Gray. - New York W.A. Benjamin 1964. - ix, 273 p. illus. 24 cm. - Frontiers in chemistry . Bibliography: p. 132. LCCN: 65012062 Subjects--Topical Terms: Molecular orbitals.Chemistry, Physical. LC Class. No.: QD461 / .B24 Dewey Class. No.: 541.22