TY  - GEN
AU  - Hettiarachchi , R.D.
AU  - Senanayake , Willie 
AU  - Abeysuriya , W.D.B.S
TI  -  Physics : radiation and kinetic theory  level 4  PSU 2111 block 3 c
U1  - 531.1133 
PY  - 1988///
CY  - Nugegoda
PB  - Open University
KW  - PHYSICS
ER  -