http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Mafic-ultramafic igneous rocks and associated carbonatites of the Gem Park Complex, Custer and Fremont Counties, Colorado
viii, 24 pages : illustrations, map. ; 29 cm.
by Raymond L. Parker and William N. Sharp.
Geological Survey professional paper ; 649