TY  - BOOK
AU  - Mayr, Ernst,
TI  -  Principles of systematic zoology
U1  - 591/.01/2 
PY  - 1969///]
CY  - New York
PB  - McGraw-Hill
KW  - Animals
KW  -  Classification
N1  - Includes bibliographical references p. (381-395 ) and index
ER  -