TY  - BOOK
AU  - Webb,John W.
TI  - Programmable controllers : principles and applications 
SN  - 0675204526
U1  - 629.895 WEB 
PY  - 1988///
CY  - Columbus
PB  - Merrill
KW  - Programmable controllers
KW  - MIS
N1  - Includes index; Bibliography: p. [315]-316
ER  -