Search Results for the EPA National Library Catalog

Items Found: 3
Showing: Items 1 - 3
Your Search: (AUTHOR=Simpson AND Robert AND Lee)

Select Item Title Year Published
Freshwater wetlands : ecological processes and management potential / 1978
The ecological effects of the aquatic herbicide fenac on small ponds / 1971
The effect of sewage effluent on the structure and function of a freshwater tidal marsh ecosystem / 1980

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