@mastersthesis {35218,
	title = {Stable isotope systematics of heavy oil deposits, Lower Cretaceous, Alberta and Saskatchewan},
	volume = {Geology},
	year = {1986},
	pages = {82},
	address = {University of Alberta},
	url = {http://search.proquest.com/docview/303532795},
	author = {Ringham, Kevin Lee}
}
