TY  - BOOK
AU  - Ayala,Francisco J.
AU  - Valentine,James W.
TI  - Evolving: the theory and processes of organic evolution 
SN  - 0805303103
PY  - 1979///
CY  - Menlo Park, Calif.
PB  - Benjamin/Cummings Pub. Co.
KW  - Evolution
N1  - Includes index; Bibliography : p.(429)-434
ER  -