@mastersthesis {33623,
	title = {The nature and significance of trace elements in oil sands and heavy oils},
	volume = {Chemistry},
	year = {1982},
	pages = {227},
	address = {Washington State University},
	url = {http://search.proquest.com/docview/303261078},
	author = {Jacobs, Frank Sparrow Udemba}
}
