TY  - BOOK
AU  - Hackworth,John R.
AU  - Hackworth,Frederick D.
TI  - Programmable logic controllers: programming methods and applications 
SN  - 0130607185
AV  - TJ223.P76 .H33 2004
U1  - 629.8/9 21
PY  - 2004///
CY  - Delhi
PB  - Pearson Education Asia Pvt. Ltd.
KW  - Programmable controllers
N1  - Includes bibliographical references (p. 281) and index
ER  -