 | Goolsby, O. Halbert, (Otis Halbert), 1930- 4n | (1) |
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 | Goolsby, O. Halbert, (Otis Halbert), 1930- 4n; Changes in EEC imports of commodities affected by the variable levy system / . Washington, D.C. : Economic Research Service, U.S. Dept. of Agriculture, 1968. | |
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