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Environmental Protection Agency (EPA) | Function, History, & Facts
United States Environmental Protection Agency - Wikipedia
Our Mission and What We Do | US EPA - U.S. Environmental Protection Agency
U.S. Environmental Protection Agency | US EPA
About EPA | US EPA - U.S. Environmental Protection Agency
Our Mission and What We Do | About EPA | US EPA
What Is the Environmental Protection Agency (EPA)? What It Does
EPA History | US EPA
Environmental Protection Agency - Encyclopedia.com
Environmental Protection Agency - Encyclopedia Britannica