@book{63566,
	author = {Wallace, Alfred Russel,},
	title = {Contributions to the Theory of Natural Selection :},
	publisher = {Project Gutenberg,},
	year = {2007},
	address = {Salt Lake City, UT :},
	note = {Release date is 2007-08-29},
	url = {https://www.gutenberg.org/ebooks/22428}
}