Leaching, Physicochemical or geochemical

• Atanga, M. B. S., Van der Meerve, A. S., Shemamg, E. M., Suh, C. E., Kruger, W., Njome, M. S., Asobe, N. E., (2013), Volcanic Ash from the 1999 Eruption of Mount Cameroon Volcano: Characterization and Implications to Health Hazards, African Journals Online, 8(2-3), 63-70, N/A