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2. Availability of fixed ammonium in soils containing different clay minerals;Allison;Soil Science,1953
3. Determination of ecophysiological maintenance carbon requirements of soil microorganisms in a dormant state;Andersen;Biology and Fertility of Soils,1985
4. Nitrogen transformations with special reference to gaseous N losses from zero-tilled soils of Saskatchewan, Canada;Aulakh;Soil and Tillage Research,1986
5. An automated method for determining nitrate-nitrogen in soil;Best;Queensland Journal of Agriculture and Animal Science,1976