Arbab, F.2007-11-121987-04-012007-11-121983http://hdl.handle.net/10625/8144DraftText116 p.Application/pdfenRURAL DEVELOPMENTSOCIAL PARTICIPATIONRURAL SCHOOLSAGRICULTURAL PRODUCTIONCOLOMBIATECHNOLOGICAL CHANGECULTIVATION SYSTEMSALTERNATIVE TECHNOLOGYDEVELOPMENT PROJECTSAGRICULTURAL EXTENSIONSMALL FARMSCURRICULUMWorking Paper