Bron, J.

Bron, J., 1985. Maintenance, the headache of the Decade : an analysis of the problematic maintenance situation of wells and handpumps in Sub-Saharan Africa, Wageningen, The Netherlands: Agricultural University Wageningen, Dept. of Civil Engineering. Available at: http://fr.ircwash.org/sites/default/files/202.6-2295.pdf.