TY  - BOOK
AU  - Mayr, Ernest.
TI  - Methods and principles of systematic zoology
U1  - 590.12 
PY  - 1953///
CY  - New York
PB  - McGraw-Hill
KW  - ZoologÃ­a
KW  - ClasificaciÃ³n
KW  - Nomenclatura
ER  -