TY  - GEN
AU  - Webb, John W.
AU  - Reis Ronald A
TI  - Programmable logic controllers: principles and applications 
SN  - 013041672X
AV  - TJ233.P76 
U1  - 629.8/9 
PY  - 2003///
CY  - Upper Saddle River, NJ
PB  - Prentice Hall
KW  - Programmable controllers
N1  - Includes bibliographical references (p. 453-454) and index
ER  -