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Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model by Smith, Joyotee, Umali, Gloria

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Subjective versus objective yield distributions as measures of production risk by Smith, Joyotee, Mandac, Abraham M.

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Soil Nitrogen and Fertilizer Recommendations for Irrigated Rice in the Philippines by Smith, Joyotee, Neue, H.U., Umali, Gloria

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Risk and nitrogen use on rainfed rice: Bicol, Philippines by Smith, Joyotee, Umali, Gloria, Rosegrant, Mark W., Mandac, A. M.

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Bosques secundarios y manejo integrado de recursos en la agricultura migratoria por colonos en Latinoamérica by Smith, Joyotee, Finegan, Bryan, Sabogal, César, Gonçalves Ferreira, Maria do Socorro, Siles González, Gustavo, Kop, Petra van de, Díaz Barba, Armando

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