Version history for Wood, Nathan J., and Halsing, David L., 2006, Opportunities and needs for mobile-computing technology to support U.S. Geological Survey fieldwork: U.S. Geological Survey Circular 1299, 24 p. [available on the World Wide Web at URL http://pubs.usgs.gov/circ/2006/1299/ ]. Version 1.0, December 19, 2006 Initial release online at http://pubs.usgs.gov/circ/2006/1299/