K. Ijaz et Barq, S. A.,
« Country paper : Pakistan », in
Women and water : domestic shallow well water supplies, the family handpump scenario : proceedings of a regional seminar "Women and Water - the Family Handpump", Manila, 29 August - 1 September 1989, 1990, p. P. 117-140 : map., tab.
F. R. Medecins s Paris,
« L'or bleu ». Etat d'Urgence, Paris, France, p. Video (18 min.): VHS, 1990.
M. Vines et Reed, B.,
« Low-cost unconvential sewerage »,
Waterlines, an international journal of water, sanitation and waste, p. p. 26-29: fig., photogr., 1990.