TY  - GEN
AU  - Nanda , D.M.
AU  - Gunasinghe , R.M.
AU  -  Sumanasekara , G.U.
AU  -  Dias , A.G.N.P.
TI  - Physics heat
U1  - 536 
PY  - 1986///
CY  - Nugegoda
PB  - Open University
KW  - Physics
ER  -