TY  - BOOK
AU  - Stebbins,Ledyard G.
TI  - Processes of organic evolution  
U1  - 575 STE  
PY  - 1973///.
CY  - New Delhi
PB  - Prentice-Hall.Inc
KW  - Evolution (Biology)
KW  - Organic evolution
KW  - Origin of species
ER  -