Extensión rural: manual para facilitadores de procesos colectivos

advisory officers asociaciones de agricultores association d'agriculteurs communication technology conseiller agricole cours professionnel desarrollo rural diffusion de l'information diffusion of information education extension extension activities farmers associations formation information services interest groups mass media moyen de communication de masse population rurale professional services rural development rural population service d'information service professionnel servicios profesionales technique de communication technology transfer training training courses transfert de technologie vulgarisation