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2
-
Gamarra al garete : concentración local y aislamiento global / Evert-Jan Visser, José Ignacio Távara.
- Centro de estudios y promoción del desarrollo (DESCO),
- 1995.
- Lima :
-
Prospects for sustaining potato and sweetpotato cropping systems in the densely-populated highlands of Southwest Uganda / Jan W. Low.
- International Potato Center (CIP),
- 2000.
- Lima :