http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Coalwood coal field, Powder River County, Montana
geology and fuel resources of a part of the Powder River basin
1 online resource (iv, 23-106 pages, 12 pages of plates) : illustrations, maps (some color).
Title from title screen (viewed July 21, 2014).
Includes bibliographical references (pages 103-104) and index.
Contributions to economic geology ; 1951