@book{28042,
	author = {Ambrose, John Willis,},
	title = {... The magnetometer as an aid in geological mapping,},
	publisher = {E. Cloutier, printer to the King,},
	year = {1945.},
	address = {Ottawa,},
	note = {At head of title: Canada.  Dept. of mines and resources.  Mines and geology branch.}
}