U.S. Geological Survey Open-File Report 99-172 has been revised to Version 2.0 and moved to
http://pubs.usgs.gov/of/1999/of99-172/.
The old Version 1.0 is archived there also. You will be sent there in five seconds.
Date created: 05/13/2004
Last modified: 05/13/2004
Email questions to
Michael Diggles (mdiggles@usgs.gov).