TY  - BOOK
AU  - Webb,John W.
AU  - Reis,Ronald A.
TI  - Programmable logic controllers: principles and applications 
SN  - 9788120323087
U1  - 629.89 21
PY  - 2003///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Electrical & electronics engineering
KW  - Programmable controllers
KW  - Programming language- Computer
N1  - Includes bibliographical references (p. 453-454) and index; EEE
ER  -