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Evaluation of the sensitivity of inventory and monitoring national parks to nutrient enrichment effe

Sullivan, Timothy J. (Timothy Joseph), 1950- author.
Denver, Colorado : U.S. Department of the Interior, National Park Service, Natural Resource Program Center, 2011. 2011

Petrified Forest in Arizona; quincentennial of the discovery of Florida; Harry S Truman National His

United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on National Parks.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2005. 2005

Petrified Forest National Monument, Arizona.

[Washington, D.C. : U.S. Dept. of the Interior, 1951]. 1951

Petrified forest

[Washington, D.C.] : National Park Service, 2021- 2021