TY  - GEN
AU  - Sriyananda , H .
AU  -  Gammampila , G . R .
AU  - Karunarathne , S . 
AU  -  Lucas , J . R . 
AU  -  Dayawansa , I. J. 
TI  - Physics science: diploma in technology level two one full credit course book 1 blocks 1,2,3,
U1  - 530 
PY  - 1985///
CY  - Nugegoda
PB  - Open University
KW  - PHYSICS
ER  -