L. Chairuca y Hassane, I.,
«Nitrate contamination in peri-urban Maputo (Mozambique)», in
Infrastructure, environment, water and people : proceedings of the 17th WEDC Conference, United Nations Centre for Human Settlement (Habitat), Nairobi, Kenya, 19-23 August 1991, 1991, pp. P. 203-207: 3 fig.
