Craig, David Parker Excitons in molecular crystals theory and applications [by] D. F. Craig [and] S. H. Walmsley. - New York Benjamin 1968. - xi, 172 p. illus. 24 cm. - Frontiers in chemistry . Includes bibliographies. LCCN: 68024365 Subjects--Topical Terms: Exciton theory.Crystals LC Class. No.: QD941 / .C7 Dewey Class. No.: 530.4/1