Lengyel, Bela A. Lasers; generation of light by stimulated emission / Bela A. Lengyel. - New York, Wiley c1962. - 125 p. illus. 24 cm. Includes index Includes bibliography. LCCN: 63009430 Subjects--Topical Terms: Lasers. LC Class. No.: TK7872.L3 / L4 Dewey Class. No.: 621.366/LEL