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630.201063/S2008 Perú, el problema agrario en debate | 630.201063/S2006 Perú, el problema agrario en debate | 630.9851/G81 Crianza andina de la chacra | 630.985/K41 Tecnología tradicional andina | 631.451/A32 Los andenes de la sub-cuenca del río Ayaviri-Yauyos | 631.451/Ll737 Conservación y abandono de andenes | 631.51/D89 Agricultural terracing in the aboriginal new world |
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