@article {51619,
	title = {Athabasca oil sands - historical review and summary of technical data},
	year = {1957},
	note = { Contribution 69.},
	pages = {300 pages },
	institution = {Research Council of Alberta },
	address = {Edmonton, AB  },
	keywords = {history, overview},
	author = {Clark, Karl Adolphe}
}
