TY  - BOOK
AU  - Simpson, George Gaylord,
CN  - QL351 .S5
CN  - QL351
CY  - New York,
DA  - 1961.
ID  - 55037
KW  - Animals
KW  - Zoology
PB  - Columbia University Press,
PP  - New York,
PY  - 1961.
T1  - Principles of animal taxonomy.
TI  - Principles of animal taxonomy.
ER  -