TY  - BOOK
AU  - Randhawa,M.S.
AU  - Singh,Jagjit
AU  - Dey,A.K.
AU  - Mittre,Vishnu
TI  - Evolution of life
U1  - 551.7 
PY  - 1969///
CY  - New Delhi
PB  - Publications and Information Directorate
KW  - Stratigraphy
KW  - Evolution of life
ER  -