Kells, Lyman M. Spherical trigonometry, with naval and military applications, by Lyman M. Kells ... Willis F. Kern ... and James R. Bland ... - 1st ed. - New York, London, McGraw-Hill book company, inc., 1942. - xiii, 163 p. incl. front., illus., diagrs. 24 cm. "Answers": p. 153-163. Subjects--Topical Terms: MCESpherical trigonometry. Dewey Class. No.: 516.244 / KEL