TY  - BOOK
AU  - Bell,P.R.
TI  - Darwin's biological work: some aspects reconsidered 
U1  - 575.0162 
PY  - 1959///
CY  - Cambridge
PB  - The University Press
KW  - Darwin, Charles,
KW  - Life (Biology)
KW  - Biological Sciences
N1  - "Notes and references": p. 311-343
ER  -