TY  - GEN
AU  - Cooray , P.G.
AU  - Fonseka , G.M. 
AU  - Preme , W.K.B.N. 
AU  -  Jinadasa , S.U.P.
TI  - Essentials of geology: Book 1
U1  - 551 
PY  - 2000///
CY  - Sri Lanka
PB  - Open university of Sri Lanka
KW  - ESSENTIALS OF GEOLOGY
KW  - HISTORY OF THE EARTH
KW  - SOLAR SYSTEM
KW  - STRUCTURE OF THE EARTH
ER  -