2026-06-27http://hdl.handle.net/123456789/178742Francis Kadja Sanhou, s/c Kouaho Etchien, BP 7230 Abidjan 18, Côte d'lvoire: 'The problem of 'water lettuce, (Spore 62 in French, and Spore 63 in English) is indeed very worrying for us. It makes some rivers, and lagoons especially, difficult...Open AccessNews Item