TY - BOOK AU - Gopal,M. TI - Control systems: principles and design SN - 0074621351 U1 - 629.8 22 PY - 1997/// [reprinted 2000 , 1999] CY - New Delhi PB - TataMcGraw-Hill Publishing Co. Ltd. KW - Automatic control N1 - Includes bibliographical references and index ER -