Working Papers of the Department of Agri-cultural Economics. University of Wisconsin, Madison, 1991, USAжурнал

Статьи, опубликованные в журнале

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• • 1991 Instability of Grain Yields and Soil Conditions in Wisconsin Countiens: A First Impression
  • Lugachev М.
  • в журнале Working Papers of the Department of Agri-cultural Economics. University of Wisconsin, Madison, 1991, USA