http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
parent of the soil, foundation for the vine
39 unnumbered pages : digital, PDF file.
Title from PDF title screen (viewed on Mar. 21, 2006).
Mode of access: Internet from the USGS web site. Address as of 8/17/07: http://pubs.usgs.gov/of/2006/1069/of2006-1069.pdf; current access via PURL.
U.S. Geological Survey open-file report ; 2006-1069