Wardle, Harry. Fundamentals of electrotechnology. vol.1, Experimental approach / H. Wardle. - London : Hutchinson, 1972. - xvi, 359 p. : ill. ; 23 cm. + pbk. ISBN: 0091082218 LCCN: 74158613 Subjects--Topical Terms: Electrical engineering Dewey Class. No.: 621.3