 | Sweet potatoes Marketing. | (2) |
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 | Potatoes and sweetpotatoes : usual dates for planting, harvesting, marketing. Washington, D.C. : Statistical Reporting Service, Crop Reporting Board, U.S. Dept. of Agriculture, 1973. | |
| Preparing sweetpotatoes for market / by L.J. Kushman. Kushman, L. J. (Leaton John), 1919- 4n Washington, D.C. : U.S. Dept. of Agriculture, 1967. | |
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