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Water, a looming crisis? : International Conference on World Water Resources at the Beginning of the 21st Century (UNESCO, Paris, 3- 6 June 1998) : proceedings / edited by H. Zebidi.
- 333.91 I61217
- International Conference on World Water Resources at the Beginning of the 21st Century (3-6 June 1998 : Paris, France)
- UNESCO,
- 1998.
- Paris :