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LIBROS DEL AUTOR: paul von guerard

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Science for Watershed Decisions on Abandoned Mine Lands; Review of Preliminary Results, Denver, Colorado, February 4-5, 1998

David A. Nimick / Paul Von Guerard

The United States Geological Survey (USGS) is a scientific organization created in 1879, and is part of the U.S. government. Their scientists explore our environment and ecosystems, to determine the natural dangers we are facing. The agency has over 10,000 employees that collect, monitor, and analyze data so that they have a better understanding of our problems. The USGS is ded...

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