@book{26083,
	author = {Jenkins, Olaf Pitt, and Wilson, Eldred Dewey,},
	title = {A geological reconnaissance of the Tucson and Amole mountains},
	publisher = {Arizona bureau of mines,},
	year = {1920.},
	series = {Geological series,},
	address = {Tucson, Ariz.,},
	note = {At head of title: University of Arizona bulletin.}
}