Connelly, Frank Cecil. Transformers : their principles and design for light electrical engineers / Frank Cecil Connelly. - London : Sir Issac Pitman & Sons Ltd., 1950 [reprinted 1965] - xiv, 490 p. : ill.; 23 cm. Includes bibliographies. Subjects--Topical Terms: Electric transformers. Dewey Class. No.: 621.3143 / COT 1965