TY  - BOOK
AU  - Petruzella, Frank, D 
TI  - Programable logic controller 
SN  - 978-007-106738-6 
U1  - 4.165 
PY  - 2008///
CY  - Tata mcgraw hill company Ltd 
PB  - New Delhi 
KW  - MICROPROCESSOR
ER  -