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| L-Wert-Methode f (procedure, isotopic dilution procedure for estimating amount of soil nutrient); L-Wert-Technik f (procedure, isotopic dilution procedure for estimating amount of soil nutrient) | |||
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| L-Wert-Methode f (procedure, isotopic dilution procedure for estimating amount of soil nutrient); L-Wert-Technik f (procedure, isotopic dilution procedure for estimating amount of soil nutrient) | |||
