Pugh, Emerson M. Principles of electricity and magnetism / Emerson M. Pugh and Emerson W. Pugh. - Reading, Mass., Addison-Wesley Pub. Co. c1960. - 430 p. illus. 24 cm. LCCN: 60008245 Subjects--Topical Terms: Electricity.Magnetism. LC Class. No.: QC521 / .P8 Dewey Class. No.: 621.34/PUP