@article {25439,
	title = {Bitumous sands of northern Alberta: occurrence and economic possibilities: report on investigations to the end of 1924: topographical maps},
	volume = {Mines Br. Report 632},
	year = {1926},
	pages = {244},
	institution = {Dept. of Mines, Canada},
	author = {Ells, S. C.}
}
