TY  - BOOK
AU  - Webb 
AU  - Reis, Ronald A.
TI  - Programmable logic controllers : principles and applications 
SN  - 0024249807 
U1  - 629.895 WEB 1995 
PY  - 1995///
CY  - Englewood Cliff, New Jersey
PB  - Prentice Hall
KW  - Programmable controllers
N1  - Includes bibliographical references and index
ER  -