TY  - BOOK
AU  - Webb,John W.
AU  - Reis,Ronald A.
TI  - Programmable logic controllers: principles and applications 
SN  - 9788120323087
AV  - TJ233.P76 W43 2003
U1  - 629.895 WEP 21
PY  - 2009///
CY  - New Delhi
PB  - PHI Learning
KW  - Programmed control systems
N1  - Includes bibliographical references (p. 453-454) and index
ER  -