TY  - BOOK
AU  - Perera, K.Sarath D.
TI  - Descriptive chemistry of elements: unit I
SN  - 9789552313042
U1  - 540 
PY  - 2012///
CY  - Nawala
PB  - OUSL
KW  - Chemistry
N1  - Foundation courses in Science and Engineering : level 2 
Under the Natural Science
ER  -