TY  - BOOK
AU  - Padumadasa, Chayanika
TI  - Introduction to periodic table: unit II
SN  - 9789552313530
U1  - 546.8 
PY  - 2012///
CY  - Nawala
PB  - OUSL
N1  - Foundation certificate programme in science : Chemistry 1 : Level 2
ER  -