TY  - BOOK
AU  - Bolton,W.
TI  - Programmable logic controllers: an introduction 
SN  - 0750659866
U1  - 629.89 22
PY  - 2003///
CY  - Oxford, Boston
PB  - Newnes
KW  - Programmable controllers
KW  - Logic circuits
KW  - Programmable logic devices
N1  - Previous ed.: 2000; Includes index
UR  - http://www.loc.gov/catdir/toc/fy0606/2005281817.html
UR  - http://www.loc.gov/catdir/enhancements/fy0632/2005281817-d.html
ER  -