TY  - GEN
AU  - Hackworth, John R
AU  - Hackworth, John R
AU  - Hackworth, Frederick D
TI  - Programmable logic controllers: programming methods and applications
SN  - 9 788129 703408
U1  - 004.387 HAC 
PY  - 2004///
CY  - Singapore
PB  - Pearson education
KW  - Programming
ER  -