TY  - BOOK
TI  - Introduction to programmable logic controllers : : an overview-english   
T2  - Bergwall production series 1   
SN  - 2004000047   
PY  - 0000///
CY  - Crowborough
PB  - Audio Visual Source, 
KW  - Electric
KW  - introduction to programmable logic controllers
KW  - Electric-an overview
N1  - VHS/NTSC
ER  -