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Food, Fuel, and shelter : a watershed analysis of land-use ; trade-offs in a semiarid region (Report of a conference on the Front Range of Colorado, May 20-22, 1976, Greeley, Colo.)/ Timothy D. Tregarthen
Tregarthen, Timothy D., (1978)
Regions of the United States
Hart, John Fraser, (1972)
Current issues in Hawaii's economy : department of Economics, the University of Hawaii
Ebel, Robert D., (1974)
Retail sales in South Dakota
Montgomery, V. E., (1960)
South Dakota economic and business abstract, 1939-1962
Gray, W. K., (1963)