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    Land use systems and dynamics in Pucallpa, Peru by Fujisaka, Sam, Madrid, Otoniel, Hurtado, L, Usma, Herman, Ricse, A, Flores, Y, Idrogo, F, Barbarán, J, Arévalo, L., Labarta, Ricardo Antonio

    Published 1999
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    Book Chapter
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    Regional relationships between inherent coffee quality and growing environment for denomination of origin labels in Nariño and Cauca, Colombia by Oberthür, Thomas, Läderach, Peter R.D., Posada Suárez, Húver, Fisher, Myles J., Samper, Luis F, Illera, Julia, Collet, L, Moreno, Edgar, Alarcón, Rodrigo, Villegas, Andres, Usma, Herman, Pérez, Carolina, Jarvis, Andy

    Published 2011
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    Journal Article
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    Prospects for sorghum and pearl millet utilization in acid soils in Cauca state by Escobar, Germán, Usma, Herman, Madrid, Otoniel, Rivera, Gonzalo, Escue, Israel

    Published 2000
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    Conference Paper

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