Incorporation and extractability of residual 15N in a coniferous forest soil
Chang S.X.
Preston Caroline M.
Soil Biol.Biochem.. Vol. 30, No. 8-9 (1998), s. 1023-1031
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https://www.sciencedirect.com/science/article/pii/S0038071797002769?casa_token=UWxiQVDOPW8AAAAA:7NEk5xEQfWVF80xSKb3-4u-5-rDDmXDwD8M7zXHvQUaAcFainoTcvKzllirDc43pDpsc0VuF