TY  - BOOK
AU  - Petruzella Frank D.
TI  -  Programmable logic controllers 
SN  - 978-0-07-106738-6
AV  - TJ 223  P48 2005
PY  - 2005///
CY  - Tata McGrawhill
PB  - New Delhi
KW  - programmable logic controllers
ER  -