1. Approved Methods of the AACC. Oct. 1976 (Revised Nov. 1983); Method 46-12;American Association of Cereal Chemists,1976
2. Decomposition of organic matter and carbon emissions from soils;Anderson,1995
3. Soil at Risk;Anon.,1984
4. Components of surface soil structure under conventional and no tillage in northwestern Canada;Arshad;Soil Tillage Res.,1999
5. Bulk density;Blake,1986