TY  - BOOK
AU  - Hackworth, John R
AU  - Hackworth, Frederick D
TI  - Programmable Logic Controllers : Programming Methods and Applications
SN  - 9788177587715
U1  - 629.89  HAC 
PY  - 2004///
CY  - New Delhi
PB  - Pearson
KW  -  Programmable Controllers
ER  -