Molecular orbitals in chemistry, physics and biology—A tribute to R. S. Mulliken: Edited by Per-Olov Löwdin, Department of Quantum Chemistry, Uppsala University, Uppsala, Sweden and Quantum Theory Project, University of Florida, Gainesville, Florida; and Bernard Pullman, Institut de Biologie Physico-Chimique, Université de Paris, Paris, France. Academic Press, New York, 1964. xii + 578 pp. $22.00