Humic acid complex formation with urea alters its structure and enhances biomass production in hydroponic maize
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2015 ◽
Vol 63
(16)
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pp. 4202-4210
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1992 ◽
Vol 123-124
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pp. 77-82
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1966 ◽
Vol 30
(11)
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pp. 1111-1119
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