http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Geologic map of the Bear Trap Creek quadrangle, Madison County, Montana
Bear Trap Creek quadrangle, Madison County, Montana, geologic map
1 map : color ; 58 x 41 cm., on sheet 91 x 112 cm., folded in envelope 30 x 24 cm.
U.S. Department of the Interior, U.S. Geological Survey ; by Karl S. Kellogg.
Relief shown by contours and spot heights.
Includes text, bibliography, 3 col. cross sections, location map, and ancillary map showing regional structure.