Food security and agricultural development in sub-Saharan Africa: Building a case for more public support. Background document

afrique au sud du sahara agricultural development aide alimentaire ayuda alimentaria comercio commerce commercialisation development policies economic development food aid food intake food security food supply histoire historia history income investissement public labour productivity marketing mercadeo politique de soutien precios prices prise alimentaire (homme) prix productividad del trabajo public investment public sector renta revenu secteur public seguridad alimentaria suministro de alimentos support measures trade