TY  - BOOK
AU  - Bolton, W.
TI  - Programmable logic controller
SN  - 9781856177511
U1  - 629.8 BOL 2009 22nd ed.
PY  - 2009///
CY  - Amsterdam
PB  - Newnes
KW  - Logic controllers
N1  - Appendices, answers, & index included
ER  -