TY  - SER
AU  -  Darwin, Charles, 
TI  -  The Variation of Animals and Plants under Domestication 
AV  - QH 
PY  - 2002///
PB  -  Project Gutenberg, 
KW  -  Domestic animals
KW  -  Plants, Cultivated
KW  -  Variation (Biology)
N1  -  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/3332
ER  -