http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Bishop Ash Bed (Middle Pleistocene) and some older (Pliocene and Pleistocene) chemically and mineralogically similar ash beds in California, Nevada, and Utah
iv, 37 pages : illustrations, maps ; 28 cm.
by Glen A. Izett, John D. Obradovich, and Harald H. Mehnert.