1. Tropical Soil Biology and Fertility: A Handbook of Methods;Anderson,1993
2. Overland flow on a steep, forested infiltrating slope;Bren;Aust. J. Soil Res.,1979
3. The hydrological characteristic of the undrained organic soils in the lake states;Boelter,1974
4. Official Methods of Analysis of AOAC International;Cunniff,1995
5. Standard Methods for the Examination of Water and Wastewater;Eaton,1995