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Senelwa, K.; Ekakoro, E.; Kirongo, B. B.; EtiƩgni, L.; Orori, B.; Lipwoni, V.; Katigo, J. K.; Mboma, L. M. Effect of Charcoal Earth Kilns Construction and Firing on Soil Chemical Characteristics. J Man Hut Trop 2011, 15 (3), 91-95.