TY  - GEN
AU  - Jayaratne , Osmund
AU  - Jayasinghe , E.M.
TI  - Physics general physics and thermal physics Block 1-B
U1  - 536 
PY  - 1984///
CY  - Nugegoda
PB  - Open University
KW  - Thermodynamics
KW  - Heat
KW  - Physics
ER  -