TY  - BOOK
AU  - SPENCER,Herbert
TI  - The principles of biology,
AV  - QH 307 .S749 1898
PY  - 1898///-1900
CY  - New York
PB  - D. Appleton and company
KW  - Biology
N1  - Vol. II has half-title: A system of synthetic philosophy, vol. III
ER  -