Morse, Philip M. 1903-1985. Methods of theoretical physics [by] Philip M. Morse [and] Herman Feshbach. - New York, McGraw-Hill, 1953. - 2 v. illus. 24 cm. - International series in pure and applied physics . LCCN: 52011515 Subjects--Topical Terms: Mathematical physics. LC Class. No.: QC20 / .M6 Dewey Class. No.: 530.151