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Fertilization systems in organic farming based on long term experiments. final report of the concerted action "Elaborating of standards for site specified fertilization systems on organic farming in Europe based on long term field experiments" (AIR3-CT94-1940) / [Institute for Biodynamic Research]. Ed. by Joachim Raupp
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Fertilization systems in organic farming based on long term experiments. final report of the concerted action "Elaborating of standards for site specified fertilization systems on organic farming in Europe based on long term field experiments" (AIR3-CT94-1940) / [Institute for Biodynamic Research]. Ed. by Joachim Raupp