TY  - BOOK
AU  - Mayr,Ernst
TI  - Animal species and evolution
AV  - QH371 .M33
U1  - 591.15 19
PY  - 1963///
CY  - Cambridge
PB  - Belknap Press of Harvard University Press
KW  - Animal species
KW  - Animals
KW  - Variation
KW  - Evolution (Biology)
N1  - 1970 ed. published under title: Populations, species, and evolution
ER  -