TY  - BOOK
AU  - Burkhardt, Frederick  .
TI  - Evolution: selected letters of Charles Darwin 1860-1870 / 
SN  - 978-0-521-87412-0
U1  - G:66 
PY  - 2008///
CY  - Cambridge : 
PB  - Cambridge University Press , 
KW  - Evolution
ER  -