@book{25115,
	author = {Michigan. and Ruthven, Alexander Grant,},
	title = {A biological survey of the sand dune region on the south shore of Saginaw Bay, Michigan.},
	publisher = {Wynkoop, Hallenbeck, Crawford co., state printers,},
	year = {1911.},
	series = {Publication 4, Biological series 2},
	address = {Lansing, Mich.,},
	note = {At head of title: Michigan Geological and biological survey.}
}