TY - BOOK AU - Crispin,Alan J. TI - Programmable logic controllers and their engineering applications SN - 0077093178 (pbk. : alk. paper) AV - TJ223.P76 C75 1997 U1 - 629.8/9 20 PY - 1997/// CY - London, New York PB - McGraw-Hill KW - MS Control KW - MScon N1 - "Incorporating IEC 1131-3 standard"--Cover; Includes bibliographical references and index ER -