TY - BOOK AU - Duff,John R AU - Herman,Stephen L. TI - Alternating current fundamentals SN - 0827341563 AV - TK 1141 D83A 1991 PY - 1991/// CY - New York PB - Delmar Publishers , Inc. KW - Electric currents, Alternating KW - ELECTRIC ENGINEERING N1 - Includes index ER -