 | Krause, Orville E. 1n | (2) |
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 | Krause, Orville E. 1n; Cropland trends since World War II : regional changes in acreage and use / . Washington, D.C. : Economic Research Service, U.S. Dept. of Agriculture, 1970. | |
| Krause, Orville E. 1n; Airphoto use in resource management : a survey of non-federal purchasers of Agricultural Stabilization and Conservation Service airphotos / by Orville E. Krause. Washington, D.C. : Economic Research Service, U.S. Dept. of Agriculture, 1969. | |
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