TY  - GEN
AU  - Perera ,  I.K.
AU  - Gunasinghe , R.M.
AU  -  Jayasinghe , E.M.
TI  - Physics: basic electro magnetism block 3-A
U1  - 538 
PY  - 1985///
CY  - Nugegoda
PB  - Open University
KW  - MAGNETISM
KW  - PHYSICS
ER  -