TY  - GEN
AU  - Senanayake ,  Willie
AU  - Hettiarachchi , R.D. 
AU  - Abeysuriya , W.D.B.S.
TI  - Physics : thermodynamics and related concepts 
U1  - 536.7 
PY  - 1987///
CY  - Nugegoda
PB  - Open University
KW  - Physics
ER  -