Bardell, P. R. Magnetic materials in the electrical industry / P. R. Bardell. - 2nd ed. - London : Macdonald, c 1960. - xiv, 320 p. : ill. ; 23 cm. Includes index. 338 338 Subjects--Topical Terms: Magnetic materials.Electrical engineering. Dewey Class. No.: 621.316 / B236m