TY  - BOOK
AU  - Purohit, N.J.  .
TI  - Earth science geology: environment and the universe / 
SN  - 978-93-81991-26-8
U1  - H 
PY  - 2014///
CY  - New Delhi : 
PB  - Swastik Publications , 
KW  - Geology- Environment and universe
ER  -