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Proceedings of the Expert Group Meeting on Harmonization of Environmental Standards in the Water Sector of ESCWA Member States : Beirut, 28 September-1 October 1999.
- 333.9100956 E9657
- Expert Group Meeting on Harmonization of Environmental Standards in the Water Sector of ESCWA Member States (1999 : Beirut, Lebanon).
- United Nations,
- 1999.
- New York :