TY  - BOOK
AU  - Shepherd,John,A.M.I.E.E.
AU  - Morton,A.H.(Alexander Hugh)
AU  - Spence,Lyndon Foster
TI  - Higher electrical engineering
SN  - 0582988888
U1  - TK/145 
PY  - 1977///
CY  - Essex
PB  - Longman Scientific & Technical
KW  - Electric engineering.
ER  -