References

Encyclopedia of Life. 2011. <http://eol.org/pages/403831/overview.> Accessed 28 October 2011.

Harms, S. 2008. Terrestrial and aquatic mollusks as environmental indicators at the Brogley Rockshelter. Mollusks Brogley Rockshelter, 11.

Hickman, C., L. Roberts, S. Keen, A. Larson and D. Eisenhour. 2009. Animal Diversity: Fifth Edition. McGraw-Hill Companies, Inc, New York City, New York.

Nekola, J. 2003 Terrestrial gastropod fauna of Northeastern Wisconsin and the Southern Upper Peninsula of Michigan. American Malacological Bulletin. Volume: 18, Issue: 1-2, Pages 21-44.

Nekola, J. 2008. Land Snail Ecology and Biogeography of Eastern Maine. Proceedings of the Academy of Natural Sciences of Philadelphia 159(1):25-30.

Pilsbry, H.A. 1939-1948. Land Mollusca of North America (North of Mexico). Monographs of the Academy of Natural Sciences of Philadelphia, 943-944, 965-966.

Wisconsin Department of Natural Resources. 2011. Honey Vertigo (Vertigo tridentata). <http://dnr.wi.gov/org/land/er/biodiversity/index.asp?mode=info&Grp=24&SpecCode=IMGAS20330>.

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