@book{25681,
	author = {Ruthven, Alexander Grant, and Hankinson, Thomas L.},
	title = {Miscellaneous papers on the zoology of Michigan.},
	publisher = {W. H. Crawford co., state printers,},
	year = {1916.},
	series = {Geological survey, Publication 20.},
	address = {Lansing, Mich.,}
}