TY  - GEN
AU  - Selvaratnam ,  M.
AU  - Fernando , J.N.O.
AU  -   ; Sulthanbawa , M.U.S.  
AU  - ; Munasinghe , V.R.N.
TI  - Chemistry block 1 part I: general and physical chemistry
U1  - 541 
PY  - 1986///
CY  - Nugegoda
PB  - Open University
KW  - CHEMISTRY
KW  - NATURAL SCIENCES
ER  -