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Recent Submissions吉仲, 怜 (2009) 大規模畑作経営における休閑緑肥作の導入・定着条件に関する研究 : 土地利用方式の改善を展望して. 北海道大学大学院農学研究院邦文紀要, 31(1): 1-77 In Hokkaido, the large-scale upland farming crop rotation system is in disorder, so its effect on la....
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