TY  - GEN
AU  - Gunasinghe , R.M.
AU  - Liyanage , L.S.G.  
AU  - Arachchi , Jayasinghe D.A.
AU  - Abeydeera , D.R.
AU  - Tilakaratne , K.N.D.
TI  - Physics : fields block 06
U1  - 530.14 
PY  - 1986///
CY  - Nugegoda
PB  - Open University
KW  - Physics
ER  -