Phosphorus: Agriculture and the Environment, Agronomy Monograph 46, 2005
издательства American Society of Agronomy
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http://dx.doi.org/10.2134/agronmonogr46.c17
http://dx.doi.org/10.2134/agronmonogr46.c18
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http://dx.doi.org/10.2134/agronmonogr46.c31
http://dx.doi.org/10.2134/agronmonogr46.c32
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