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7Improving Liquid Fertilizer Urea Efficiency Using Humic Acids Additives Extracted from Tropical Peat由 Kasim, Susilawati主題: “...Urea as fertilizer - Case studies...”
出版 2009
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18由 Ambra Singh, Kiran Jeet Kaur主題: “...Rice - Urea as fertilizer - Case studies...”
出版 2008
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