@book{13927,
	author = {Wilkinson, Philip,},
	title = {Early humans },
	publisher = {Knopf,},
	year = {1989.},
	series = {Eyewitness books},
	address = {New York :},
	edition = {1st American ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/description/random043/88013431.html}
}