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Nitrogen in particle size fractions of soils incubated for five years with 15N-ammonium and 14C-hemicellulose

✍ Scribed by B. T. CHRISTENSEN; L. H. SØRENSEN

No coin nor oath required. For personal study only.

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Mineral-fixed ammonium in clay- and silt

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Labelled and native sugars in particle-s

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