1. The fate of nitrogen applied to soils;Allison;Adv. Agron.,1966
2. Soil Plant Relationships;Black,1968
3. Studies on soil humic acids.I. The chemical nature of humic nitrogen;Bremner;J. agric. Sci., Camb.,1955
4. Determination and isotope-ratio analysis of different forms of nitrogen in soils. 1. Apparatus and procedure for distillation and determination of ammonium;Bremner,1965
5. Tracer studies of the reaction of soil organic matter with nitrite;Bremner,1966