@book{26863,
	author = {Short, Maxwell Naylor,},
	title = {Microscopic determination of the ore minerals,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1931.},
	series = {U. S. Geological survey. Bulletin 825},
	address = {Washington,},
	note = {At head of title: United States Department of the interior. Ray Lyman Wilbur, secretary. Geological survey. George Otis Smith, director ...}
}