Design of crystal vibrating systems for projectors and other applications, by William J. Fry, John M. Taylor [and] Bertha W. Henvis. - Fry, William J.; Henvis, Bertha W., joint author; Taylor, John McNay, 1905- joint author; U.S. Navy Dept. Office of Research and Inventions (New York Dover Pub, 1948)
Keywords: Crystallography; Electric waves; Pyro-and piezo-electricity.