Development of Organic Fertilizer based on the Cow Dung III. Studies on Tentative Guideline for Degree of Maturity (우분(牛糞)의 유기질비료화(有機質肥料化) 연구 III. 부숙도(腐熟度) 기준설정(基準設定))
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- Korean Journal of Soil Science and Fertilizer
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- v.24 no.4
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- pp.278-285
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- 1991