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2
-
Si Dios hizo la noche sin luz... : el manejo popular de tecnologÃas / ed. Andrew Maskrey, Guillermo Rochabrún S.
- ITDG,
- 1990.
- Lima :
-
Sweetpotato postharvest systems in Uganda : strategies, constraints, and potentials / Andrew Hall, Geoffrey Bockett, and Silim Nahdy.
- International Potato Center (CIP),
- 1998.
- Lima :