@book{13270,
	author = {Hallam, A.},
	title = {Great geological controversies /},
	publisher = {Oxford University Press,},
	year = {1989.},
	address = {Oxford ;},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0603/89036991-d.html}
}