TY  - BOOK
AU  - Hackworth,John R.
AU  - Hackworth,Frederick D.
TI  - Programmable logic controllers: programming methods and applications 
SN  - 0130607185
PY  - 2003///
CY  - Upper Saddle River, NJ
PB  - Prentice Hall
KW  - Electronic controllers
KW  - Programmable logic controllers
N1  - Includes glossary and index
ER  -