Biodiversity Heritage Library
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By "United States. Army Corps of topographical engineers [from old catalog] "
The California Desert Conservation Area Plan, 1980 /
By: United States.
Publication info: Riverside, Calif. :The Bureau,1980.
Contributed by: Bureau of Land Management (archive.org)
Report of an expedition down the Zuni and Colorado rivers,
By: United States. - Sitgreaves, Lorenzo,
Publication info: Washington,R. Armstrong, public printer,1853.
Contributed by: Library of Congress