A. A. Duah, Larmie, S. A., y Aduakye, J. G.,
«Evaluation of groundwater use in rural Ashanti», in
Water, sanitation, environment and development : proceedings of the 19th WEDC conference, Accra, Ghana, 6-10 September 1993, 1993, pp. P. 44-47 : 1 fig.
