TY  - BOOK
AU  - Webb, John W.,
AU  - Reis, Ronald A.,
TI  - Programmable Logic Controllers: Principles and Applications
SN  - 8120323084
U1  - 629.89 
PY  - 2003///
CY  - New Delhi
PB  - Prentice-Hall of India Private Limited
N1  - This book is having appendixes & bibliography
ER  -