TY - BOOK AU - Siskind, Charles S. TI - Direct- current machinery/ SN - 971-30-07522 U1 - Fil.621.3132 S622d 1978 Philippine edition PY - 1978///. CY - New York: PB - McGraw Hill Inc. KW - 1. Electric machinery-- Direct current N1 - Includes bibliographical references ER -