TY  - BOOK
AU  - Webb, John W. and Reis, Ronald A.
TI  - Programmable logic controllers: : principles and applications
SN  - 8120323084
U1  - 629.89 
PY  - 2006///
CY  - New Delhi
PB  - ; Prentice Hall
KW  - Computer Control
KW  - Engineering
KW  - Programmable Logic Control
ER  -