The sunflower crop in Minnesota
作者： F. K. Johnson , O. C. Soine , R. G. Robinson
DOI:
关键词: Sunflower 、 Sociology of scientific knowledge 、 Crop 、 Agricultural science 、 Engineering 、 Plan (drawing)
摘要: 31 pages; includes photographs and 1 plan. This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.
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