@book{25133,
	author = {Leverett, Frank,},
	title = {Surface geology of the northern peninsula of Michigan.},
	publisher = {Wynkoop Hallenbeck Crawford., state printers,},
	year = {1911.},
	series = {Michigan.  Geological and biological survey.  Publication 7.  Geological series 5.},
	address = {Lansing, Mich.,},
	note = {Map in pocket.}
}