http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Geology and late Cenozoic history of the Elephant Butte area, Sierra County, New Mexico
40 pages : illustrations, maps (some color) ; 28 cm.
Issued September 1986--Cf. errata sheet.
Circular (New Mexico. Bureau of Mines and Mineral Resources) ; 187