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Soil survey of Sierra County Area, New Mexico
ix, 1 unnumbered page, 207 pages, 2 unnumbered pages, 42 folded pages of plates : illustrations, maps (some color) ; 28 cm.
United States Department of Agriculture, Soil Conservation Service, in cooperation with United States Department of the Interior, Bureau of Land Management, and New Mexico Agricultural Experiment Station.
Includes glossary and indexes to map sheets and units.