http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Guidelines for sample collecting and analytical methods used in the U.S. Geological Survey for determining chemical composition of coal
by Vernon E. Swanson and Claude Huffman, Jr.
Title from title screen (viewed on Dec. 06, 2004).
Mode of access: Internet from the USGS Web site. Address as of 12/06/04: http://pubs.usgs.gov/circ/c735/index.htm; current access is available via PURL.