Guldbrand, K.E.

Kemper, K.E. & Guldbrand, K.E., 1990. La Malienne : a comparative study of two hand-pump projects in Casamance, Senegal, Linkoping, Sweden: Linkoping University, Department of Management and Economics. Available at: https://nl.ircwash.org/sites/default/files/202.1-90MA-10453.pdf.