http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Database dictionary for Ethiopian National Ground-Water DAtabase (ENGDA) data fields
Ethiopian National Ground-Water DAtabase (ENGDA)
1 volume (various pagings) : digital, PDF file.
by Eve L. Kuniansky, David W. Litke, and Patrick Tucci.
Title from PDF title screen (viewed on May 14, 2007).
Funded in part by the International Atomic Energy Agency.
Mode of access: Internet from the USGS web site. Address as of 11/7/07: http://pubs.usgs.gov/of/2007/1099/pdf/OFR2007-1099.pdf ; current access via PURL.
U.S. Geological Survey open-file report ; 2007-1099