. The Dunesland heritage of Illinois. Sand dunes -- Illinois; Natural history -- Illinois. Illinois Natural History Survey Circular 49. 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 Ross, Herbert Holdsworth, 1908-. Urbana

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Keywords: ., bookcentury1900, bookcontributoruniversityo, bookpublisherurbana