TY  - BOOK
AU  - Prasad, K.N.  .
TI  - Introduction to earth science / 
SN  - 0-7069-8630-X
U1  - H 
PY  - 1994///
CY  - New Delhi : 
PB  - Vikas Publishing House Pvt. Ltd. , 
KW  - Nature, geological records
ER  -