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杉浦 秋生, 林 茂樹, 三角 宇史, 伊藤 博武, 宮武 勝美, 小松 輝行. "20 網走市における畑地生産力格差 : テンサイ畑のα-グルコシダーゼ活性から心土改良の効果をみる(北海道支部講演会)." Abstracts of the Annual Meetings, Japanese Society of Soil Science and Plant Nutrition 49.0 (2003) 235