TY  - BOOK
AU  - Bird,J.O.
AU  - May,A.J.C.
AU  - Penketh,J.R.
TI  - Electrical science 3 : cheackbook
SN  - 0408006269
U1  - TK/145 
PY  - 1981///
CY  - London
PB  - Butterworth.
KW  - Electric engineering.
ER  -