TY  - BOOK
TI  - Basic DC electricity for HVAC  : : resistors and rheostats-english   
T2  - Bergwall Production   
SN  - 20040000297   
PY  - 0000///
CY  - Crowborough
PB  - Audio Visual Source, 
KW  - Electric circuits
KW  - direct current
KW  - Electricity
KW  - measurement
N1  - VHS/NTSC
ER  -