 | Grain trade United States. | (3) |
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 | An interregional analysis of the U.S. grain-marketing industry, 1966/67 . Leath, Mack N. 1n Washington : U.S. Dept. of Agriculture, 1971. | |
| The impact of vessel size on an optimal system of U.S. grain export facilities / John W. Sharp and Hugh J. McDonald. Sharp, John W., 1917- 1n Wooster : Ohio Agricultural Research and Development Center, 1971. | |
| Heavy grain exports in voyage-chartered ships : rates and volume / . Hutchinson, T. Q. (Thurlow Quinton), 1935- 1n Washington, D.C. : U.S. Dept. of Agriculture, Economic Research Service, 1968. | |
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