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Direct seeded flooded rice in the tropics : selected papers from the international rice research conference, 27-31 August 1990, Seoul, Korea / S.K. De Datta...[et al.].
- International rice research institute (IRRI),
- 1991.
- Manila :
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A handbook for weed control in rice / Kwesi Ampong-Nyarka and S.K. De Datta.
- International rice research institute (IRRI),
- 1991.
- Manila :
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The making of a nation : essays on nineteenth-century Filipino nationalism / by John N. Schumacher.
- Ateneo de Manila University Press,
- 1991.
- Manila :