@book{26831,
	author = {Williams, Merton Yarwood, and Dyer, William Spafford,},
	title = {Geology of southern Alberta and southwestern Saskatchewan,},
	publisher = {F.A. Acland, Printer,},
	year = {1930.},
	address = {Ottawa,},
	note = {At head of title: Canada. Department of mines. Geological Survey.}
}