Search Results for the EPA National Library Catalog

Items Found: 4
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Your Search: (AUTHOR=Helgen AND Judith AND Cairncross)

Select Item Title Year Published
Indexes of biological integrity (IBI) for large depressional wetlands in Minnesota / 2002
Methods for evaluating wetland condition #9, Developing an invertebrate index of biological integrity for wetlands / 2001
Peril in the ponds : deformed frogs, politics, and a biologist's quest / 2012
Responses of zooplankton and 'Chaoborus' to temephos in a natural pond and in the laboratory / 1988

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