TY - BOOK TI - Programmable logic controllers / W. Bolton. AU - Bolton, W. (William), 1933- CY - Amsterdam ; London PB - Elsevier/Newnes PY - 2007 LA - English SN - 0750681128 (pbk.) : SN - 9780750681124 (pbk.) : ET - 4th ed. N1 - Previous ed.: 2003. N1 - Includes index. ER -