TY  - BOOK
AU  - Darwin,Charles
AU  - Darwin,Francis
TI  - The Foundations of the Origin of Species: Two Essays written in 1842 and 1844
AV  - QH 
PY  - 2007///
PB  - Project Gutenberg
KW  - Evolution (Biology)
KW  - Natural selection
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/22728
ER  -