Miscellaneous papers on the zoology of Michigan. Prepared under the direction of Alexander G. Ruthven, chief naturalist; pub. as a part of the Annual report of the Board of geological survey for 1915.
Ruthven, Alexander Grant,
Andrews, A. W.
Colbert, Roy J.
Evans, Arthur Thompson,
Hankinson, Thomas L.
Lansing, Mich. :
W.H. Crawford Co., state printers,
QH105.M5 A3 no.4
Geological survey, Publication 20
Geological survey, Publication 20.