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Bryozoan statoblasts in the recent sediments of Douglas Lake, Michigan. Journal of Paleolimnology. 17:255-261.. 1997.
Paleolimnology of Douglas Lake, Michigan, with special emphasis on hypolimnetic oxygen conditions. School of Natural Resources and Environment. Doctor of Philosophy:131pp... 1995.
A record of hypolimnetic oxygen conditions in a temperate multi-depression lake from chemical evidence and chironomid remains. Journal of Paleolimnology. 25:351-365.. 2001.