TY  - SER
AU  -  Darwin, Charles, 
TI  -  The Descent of Man and Selection in Relation to Sex, Vol. I 
AV  - QH 
PY  - 2011///
PB  -  Project Gutenberg, 
KW  -  Sex differences
KW  -  Human beings -- Origin
KW  -  Sexual selection in animals
KW  -  Evolution (Biology)
KW  -  Sexual dimorphism (Animals)
N1  -  Transcription of 1871 edition;  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/34967
ER  -