Dover, A T. Theory and practice of alternating currents : - 3rd ed. - London : Isaac Pitman and Sons, 1939. - xvi, 591 p. : ill. ; 21 cm. Includes index. ISBN: 9780273432104 Subjects--Topical Terms: TransformersAC MeasurementsPower Systems Dewey Class. No.: 621.319 / DOV