TY  - BOOK
AU  - Mayr , Ernst
TI  - Principles of systematic zoology
SN  - 0070411441
AV  - QL 351 M39 1991 CIRC 
PY  - 1991///
CY  - New York
PB  - McGraw-Hill, Inc.
KW  - Zoology
N1  - Includes index
ER  -