TY  - BOOK
AU  - Wright,John P.
ED  - Heinemann Educational Books
TI  - The vital spark: an introduction to the generation, supply and use of electricity 
SN  - 0435689452
U1  - 621.3 23
PY  - 1974///.
CY  - London: 
PB  - Heinemann Educational, 
KW  - Electrical engineering
N1  - Includes index
ER  -