Search Results for the EPA National Library Catalog

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Your Search: (AUTHOR=Helmer AND E AND H)

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Select Item	Title	Year Published
1	Effects of Chlorine and Ammonia from Wastewater Treatment Facilities on Biotic Integrity.	1985
2	Gradient Anaysis of Biomass in Costa Rica and a First Estimate of Total Emissions of Greenhouse Gases from Biomass Burning.	1997

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