TY  - BOOK
AU  - Mittre,Vishnu
ED  - India.
TI  - Rocks unfold the past
U1  - 551.3 
PY  - 1973///
CY  - New Delhi
PB  - National Council of Educational Research and Training
KW  - Rocks
KW  - Juvenile literature
N1  - Glossary : p. 57-59
ER  -