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永井 恭三, 久保田 正重. "8-20 ハウス土壌における硝化作用に伴う亜硝酸の揮散について(第5報) : 揮散に及ぼすEDTA鉄の影響(8.畑・草地・園地土壌の肥沃度)." Abstracts of the Annual Meetings, Japanese Society of Soil Science and Plant Nutrition 16.0 (1970) 109