@book{27338,
	author = {Wells, Roger Clark,},
	title = {Analyses of rocks and minerals from the laboratory of the United States Geological Survey, 1914-36,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1937.},
	series = {United States.  Gelogical survey.  Bulletin 878},
	address = {Washington,},
	note = {At head of title: United States Department of the Interior.}
}