Open Access Research Paper Views (1304) Variability of pH in the Ogooué and M’passa rivers (Gabon) Sylvie B. Zongo, Brice DC. Koumba Mabert, Assane Ndiaye, Guy S. Padzys, Linda P. Omouendze Mouaragadja, Nicaise A. Lepengué, François G. Schmitt J. Biodiv. & Environ. Sci. 3(10), 70-80, October 2013. Keywords: Fluctuation, M’passa, Ogooué, Pdf, pH, Pollution Details