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Upland Rice Cultivars for Improved Acid Upland Rice-Based Farming Systems.. Philippine Journal of Crop Science. 2(18):79-88.. 1993.
Use and Potential of Domesticated Trees for Soil Improvement.. Tropical Trees: The Potential for Domestication and the Rebuilding of Forest Resources. :137-147.. 1994.
Using Plant Functional Attributes To Quantify Site Productivity and Growth Patterns in Mixed Forests.. Forest Ecology and Management. 94:149-163.. 1997.