TY  - BOOK
AU  - Mayr, Ernst
AU  - 
AU  - Ashlock, Peter D.
TI  - Principles of systematic zoology
SN  - 0070411441
U1  - 590 
PY  - 1991///
CY  - New York
PB  - McGraw-hill book
KW  - Zoology
N1  - Includes index
ER  -