U.S. Geological Survey Open-File Report 2009-1151
|
By V.A. Cross, D.S. Foster, and J.F. Bratton U.S. Department of the Interior U.S. Geological Survey U.S. Geological Survey, Reston, Virginia: 2010 For product and ordering information: For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment: Suggested citation: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured form the individual copyright owners to reproduce any copyrighted material contained within this report. |