Suggested citation and version history for Nakata, Jennifer, compiler, 2007, Hawaiian Volcano Observatory 1981 Annual Administrative Report: U.S. Geological Survey Open-File Report 2007-1341, 83 p. [http://pubs.usgs.gov/of/2007/1341/]. Version 1.0, January 16, 2008 Re-released online at http://pubs.usgs.gov/of/2007/1341/ 1981 Initial release in paper form