Hirst, A. W. Applied electricity / by A.W. Hirst. - 3rd ed. - London : Blackie & Son, 1956 [reprinted 1957]. - xxx, 398 p. : ill. ; 23 cm. Includes index. Subjects--Topical Terms: Electricity.Electrical engineering. Dewey Class. No.: 621.3 / HIA 1957