@book{85170,
	author = {Duckworth, W. L. H.},
	title = {Prehistoric man},
	publisher = {Project Gutenberg,},
	year = {2013},
	address = {Salt Lake City, UT :},
	note = {Release date is 2013-12-01},
	url = {https://www.gutenberg.org/ebooks/44331}
}