Analysis of vegetation controls on bank erosion rates, Clark Fork of the Columbia River, Deer Lodge Valley, Montana /

"U.S. Geological Survey, U.S. Department of the Interior"--P. [1].

A century of change : a photographic history and analysis of vegetation conditions, El Morro National Monument, 1891-1983 /

"February 25, 1984."

The Illinois Gap Analysis final report, 2006.

U.S. Geological Survey, Department of Interior Cooperative Agreement No. 14-48-0003-95-1090