TY  - GEN
AU  - Perera , I.K.
AU  - Jayasinghe , E.M. 
AU  -  Gunasinghe , R.M. 
AU  -  Liyanage , L.S.G.  
AU  - Abayadeera , D.R.
AU  -  Hettiarachchi , R.D. 
TI  - Physics: basic electro magnetisum block A
U1  - 537 
CY  - Nugegoda
PB  - Open University
KW  - Physics
ER  -