Suggested citation and version history for


  Frank, Dave G., Galloway, John P., Garcia, Susan, and 
       Weathers, Judy, 2007, Minerales en nuestro ambiente:  
       U.S. Geological Survey Open-File Report 2007-1185 
       [http://pubs.usgs.gov/of/2007/1185/].


  Version 1.0, July 10, 2007

  Initial release online at
  http://pubs.usgs.gov/of/2007/1185/