Bergmann, Peter Gabriel. Basic theories of physics : mechanics and electrodynamics / - New York : Prentice-Hall, c1949. - viii,280p. : ill. ; 22 cm. Includes index. english LCCN: 49050364 Subjects--Topical Terms: Physics. LC Class. No.: QC23 / .B442 Dewey Class. No.: 530/BEB