Ryff, Peter F. Electrical machines and transformers : principles and applications [Books]. Peter F. Ryff, David Platnick, Joseph A. Karnas - Englewood Cliffs, New Jersey Prentice-Hall 1987 - Pages: 448 ISBN: 0132472228 0.00 Subjects--Personal Names: Electric machinery.Electric transformers. Dewey Class. No.: TK/2000 / RYF