Ghana fertilizer privatization scheme : private sector roles and public sector responsibilities in meeting needs of farmers / H Gerner; Cinty Visker; Pritchard Bruce; International Fertilizer Development Center-Africa. - Muscle Shoals, Ala. : International Fertilizer Development Center, 1995. - xii, 149p. : ill., maps ; 29cm - Etude du secteur des engrais en Afrique .