TY  - BOOK
AU  - Parker,John Bernard
AU  - Clarke,John Joseph
TI  - An introduction to animal biology
AV  - QL47 .P18 1955
U1  - 591 
PY  - 1955///
CY  - St. Louis
PB  - Mosby
KW  - Zoology
KW  - Life (Biology)
KW  - VAriation (Biology)
N1  - Includes bibliography
ER  -