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Public grazing lands : use and misuse by industry and government
Voigt, William, (1976)
America's land and its uses published for "Resources for the future, Inc."
Clawson, Marion, (1972)
One Third of the nation's land : A report to the President and to the Congress by the Public Land Law Review Commission
(1970)
A human drought relief programme for Botswana
(1980)