Philippine Council for Agriculture, Forestry and Natural Resources Research and Development. (1992). Directory of research and development projects in agriculture, forestry and natural resources in the Philippines: Program year 1992 on-going and completed by commodity. Management Information Services Division, PCARRD.
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Cita MLA (9th ed.)Philippine Council for Agriculture, Forestry and Natural Resources Research and Development. Directory of Research and Development Projects in Agriculture, Forestry and Natural Resources in the Philippines: Program Year 1992 On-going and Completed by Commodity. Management Information Services Division, PCARRD, 1992.