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| Tobacco in the United States : production, marketing, manufacturing, exports / . Doub, Albert, 1917- 1n Washington, D.C. : U.S. Dept. of Agriculture, Agricultural Marketing Service, 1973. | |
| Potential mechanization in the flue-cured tobacco industry, with emphasis on human resource adjustment / . Washington, D.C. : Economic Research Service, U.S. Dept. of Agriculture, 1969. | |
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