TY  - BOOK
TI  - Programmable controllers expalined  : : design and development-english   
T2  - Bergwall Production   
SN  - 20040000381   
PY  - 0000///[19__]
CY  - Crowborough
PB  - Audio Visual Source, 
KW  - Design and development
KW  - Programmable controllers
N1  - VHS/NTSC
ER  -