1
Published 1879
...Report on the lands of the arid region of the United States :...
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2
Published 1890
...Report of the Special Committee of the United States Senate on the Irrigation and Reclamation...
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3
by Hutchins, Wells A. 1888-1970.
Published 1942
...United States. Bureau of Agricultural Economics....
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5
by Smythe, William E. 1861-1922.
Published 1900
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