options random home screenshot http://vulcan.wr.usgs.gov/Vhp/framework.html (World Wide Web Directory, ~04/1995)
The USGS Volcano Hazards Program

The USGS Volcano Hazards Program

Overview
Goals of the program
Role of the Volcano Observatories
References
The information presented above is derived from USGS Circular1073 Living with Volcanoes: The U.S. Geological Survey's Volcano Hazards Program authored by T.L. Wright and T.C. Pierson. This publication is free on application from: 
    Books and Open-File Reports Section
    U.S. Geological Survey
    Federal Center, Box 25425
    Denver, CO.  80225
Information about and from the other USGS volcano observatories