Ruthenberg, Hans
Innovation policy for small farmers in the tropics : the economics of technical innovations for agricultural development - Oxford Clarendon Press 1985 - 176
EXPLOTACION EN PEQUEA ESCALA
INNOVACIONES AGRICOLAS
CAMBIO TECNOLOGICO
DESARROLLO AGRICOLA
Innovation policy for small farmers in the tropics : the economics of technical innovations for agricultural development - Oxford Clarendon Press 1985 - 176
EXPLOTACION EN PEQUEA ESCALA
INNOVACIONES AGRICOLAS
CAMBIO TECNOLOGICO
DESARROLLO AGRICOLA