. A biological survey of the sand dune region on the south shore of Saginaw Bay, Michigan. Sand dunes. (Al noCK OX STOXY (I! 1 Udl'K BKACII OX STOXV Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Michigan. Geological Survey; Ruthven, Alexander Grant, 1882-1971. Lansing, Mich. : Wynkoop, Hallenbeck, Crawford co. , state printers

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Keywords: ., bookcentury1900, bookdecade1910, bookpublis, booksubjectsanddunes