http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Distribution of sedimentary rocks in Montana and the northwestern Great Plains
iii, 10 pages, 8 unnumbered leaves of plates (1 folded) : illustrations, maps ; 28 cm.
Miscellaneous contributions (Montana Bureau of Mines and Geology) ; no. 8