TY  - BOOK
AU  - Hackworth,John R.
AU  - Hackworth,Frederick D.
TI  - Programmable logic controllers:programming methods and applications / 
SN  - 0130607185   
PY  - 2004///.
CY  - Upper Saddle River,New Jersey
PB  - Pearson Prentice Hall, 
KW  - Programmable controllers
N1  - Includes bibliographical references,index and Cd rom
ER  -