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