Browsing by Author "University of Minnesota, Agricultural Extension Division; Roe, H.B."
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Item Agricultural Engineering News Letter, number 61(University of Minnesota, Agricultural Extension Division, 1937-04) University of Minnesota, Agricultural Extension Division; Roe, H.B.Item Agricultural Engineering News Letter, number 73(University of Minnesota, Agricultural Extension Division, 1938-04) University of Minnesota, Agricultural Extension Division; Roe, H.B.Item Agricultural Engineering News Letter, number 80(University of Minnesota, Agricultural Extension Division, 1938-11) University of Minnesota, Agricultural Extension Division; Roe, H.B.