By Robert G. Striegl, Richard W. Healy, Robert L. Michel, and David E. Prudic
Open-File Report 97-778-- Text and figures
U.S. Department of the Interior, U.S. Geological Survey Persistent URL: http://pubsdata.usgs.gov/pubs/of/1997/ofr97778/ Page Contact Information: USGS Publishing Network Last modified: Thursday, January 10 2013, 09:50:56 PM