| UBA |
| Umweltbundesambt (German Federal Environment Bureau). |
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| UCC |
| Uniform Code Council. |
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| UECBV |
| Union Européenne du Commerce du Bétail et de la Viande. |
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| UEL |
| Upper Explosive Limit. See Upper Flammable Limit (UFL). |
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| UES |
| Uniform Emission Standard. |
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| UFL |
| See Upper Flammable Limit (UFL). |
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| UIC |
| Union des Industries Chimiques (French chemical industry federation). |
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| UICC |
| International Union against Cancer. |
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| ulcer |
| A lesion (wound/injury) on the surface of the skin or mucous surface. |
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| ULD |
| Upper Limb Disorder. |
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| UN |
| United Nations. |
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| UN EDITRANS |
| Inland Transport Committee Databank. |
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| UN Number |
United Nations Substance Identification Number (for transport purposes).
ALSO: SIN. |
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| UNCED |
| United Nations Conference on Environment and Development; met in Rio de Janeiro, 3 to 14 June 1992, adopted the Rio Declaration and Agenda 21. |
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| UNCSD |
| United Nations Commission on Sustainable Development. |
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| UNCTAD |
| United Nations Conference on Trade and Development. |
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| UNECE |
| United Nations Economic Commission for Europe. |
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| UNEP |
| United Nations Environment Programme. Mission: “To provide leadership and encourage partnership in caring for the environment by inspiring, informing, and enabling nations and peoples to improve their quality of life without compromising that of future generations.” |
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| UNFCCC |
| United Nations Framework Convention on Climate Change. |
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| UNICE |
| Union des Industries de la Communauté Européenne / Union of Industrial and Employers’ Confederations of Europe. |
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