@book {23381,
	title = {Diary of a magnetic survey of a portion of the Dominion of Canada : Chiefly in the North West Territories, executed in the years 1842-44},
	year = {1883},
	address = {[Ottawa] : National Library of Canada},
	keywords = {diary, dominion, magnetic, North West Territories, survey},
	author = {Lefroy, Sir John Henry}
}
