TY  - BOOK
AU  - Tantrigoda , R.U.
AU  - Thayaparan , M.
TI  - Chemical formulae and calculations unit IV
SN  - 9789552313882
U1  - 541.22 
PY  - 2012///
CY  - Nawala
PB  - Open University of Sri Lanka
KW  - Chemistry
ER  -