Biblio

M. Osola, «A few buckets more : reducing sand invasion and siltation in Angola», Waterlines, an international journal of water, sanitation and waste, pp. p. 28-29 : 2 boxes, 2 fig., 1 photgr., 1998.

A. L. de Jager, «Models for the prediction of soil erosion and silt sedimentation in artificial lakes in Northern Ghana in order to determine life time». SAWA, Utrecht, The Netherlands, p. 36 p.: fig., tab., 1989.

K. Mahmood, Reservoir sedimentation : impact, extent and mitigation, vol. no. 71. Washington, DC, USA: World Bank, 1987, p. x, 118 p.: fig., tab.