Soggetti all'interno della tua ricerca.
Soggetti all'interno della tua ricerca.
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1Madison, United States Dept. of Agriculture, Bureau of Agricultural Economics; Wisconsin State Dept. of Agriculture, Division of Agricultural Statistics.2 v. ill., maps 28 cm.
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2Madison, U.S. Dept. of Agriculture, Bureau of Agricultural Economics; Wisconsin State Dept. of Agriculture, Division of Agricultural Statistics.2 v. ill., maps 28 cm.