Ghana - Land and water survey in the Upper and Northern regions, final report - Vol 5, water resources development and soil conservation.

agropiscicultura agropisciculture capital conservation de l'eau conservation des sols control de inundaciones costos costs crop rotation cropping systems electrical energy fish ponds flood control flooding gestion des ressources human population inland water transport inondation irrigation irrigation systems population humaine resource management ressource en eau riego rotation culturale sistemas de cultivo sistemas de riego soil soil conservation sol suelo transport transporte transporte por aguas continentales water conservation water power water resources