@article {29826,
	title = {The impact of oil sands development on the land surface. In :  Proceedings of the First Regional Conference of the Western Region, Engineering Institute of Canada, Edmonton, April 17-19, 1974},
	year = {1974},
	pages = {151-175},
	institution = {Engineering Institute of Canada},
	address = {Montreal, QB},
	author = {Thiessen, Henry W.}
}
