@book{196276,
	author = {Bernal, J. D.},
	title = {Science in history :},
	publisher = {Penguin Books,},
	year = {1969.},
	series = {Everyman's library ;},
	address = {London :},
	url = {http://www.loc.gov/catdir/bios/random051/95234890.html}
}