http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Idaho, western Montana, west-central South Dakota, and northwestern Wyoming
6 maps on 2 sheets : color ; 89 x 107 cm., or smaller, folded in envelope 30 x 24 cm.
by Robert G. Luedke and Robert L. Smith.
Late Cenozoic volcanic centers in Idaho, Montana, South Dakota, and Wyoming
Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-1091-E