| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| universal gas constant to Uznam |
| |
| universal gas constant |
| Universalist Church of America |
| universal language |
| Universal Postal Union |
| Universal Product Code |
| universals |
| universal time |
| universe |
| universities |
| University City |
| University Heights |
| University Park |
| university press |
| Unknown Soldier, Tomb of the |
| unlawful assembly |
| Unni |
| UNRRA |
| Unruh, Fritz von |
| unsaturated fat |
| Unser, Al |
| Untermeyer, Louis |
| Untermyer, Samuel |
| Unterwalden |
| untouchables |
| ununbium |
| ununhexium |
| ununoctium |
| ununpentium |
| ununquadium |
| ununtrium |
| Unwin, Sir Raymond |
| Upanishads |
| upas tree |
| Updike, Daniel Berkeley |
| Updike, John |
| Upernavik |
| Uphaz |
| upholstery |
| Upjohn, Richard |
| Upland |
| upland cress |
| Upolu |
| Upper Arlington |
| Upper Austria |
| Upper Avon |
| Upper Canada |
| Upper Delaware Scenic and Recreational River |
| Upper Hutt |
| Upper Missouri River Breaks National Monument |
| Upper Palatinate |
| Upper Volta |
| Uppsala |
| Uppsala, University of |
| Upshur, Abel Parker |
| Ur |
| uracil |
| Ural |
| Uralic and Altaic languages |
| Urals |
| Uralsk |
| Urania |
| uraninite |
| uranium |
| Uranium City |
| Uranus, in astronomy |
| Uranus, in Greek religion and mythology |
| Urartu |
| Urawa |
| Urban II |
| Urban IV |
| Urban V |
| Urban VI |
| Urban VIII |
| Urban, Joseph Maria |
| Urbana |
| Urbandale |
| urban enterprise zone |
| Urban League, National |
| Urbino |
| urban planning |
| Urchard, Sir Thomas |
| Urdu |
| urea |
| uremia |
| ureter |
| urethra |
| Urey, Harold Clayton |
| Urfa |
| Urfé, Honoré d’ |
| Urga |
| Urganch, city, Uzbekistan |
| Urgench, ancient city, present-day Turkmenistan |
| Uri, in the Bible |
| Uri, canton, Switzerland |
| Uriah |
| Urias |
| Uribe Vélez, Álvaro |
| uric acid |
| Uriel |
| Urijah |
| Urim and Thummim |
| urinalysis |
| urinary system |
| urine |
| Uris, Leon |
| Urmia |
| Urmia, Lake |
| Ur-Nammu |
| Urquhart, David |
| Urquhart, Sir Thomas |
| Urquiza, Justo José de |
| Urraca |
| Ursa Major and Ursa Minor |
| Ursins, Marie Anne de la Trémoille, princesse des |
| Uruapan |
| Urubamba |
| Uruguay, country, South America |
| Uruguay, river, South America |
| Uruk |
| Ürümqi |
| Usama bin Laden |
| Usambara |
| USA PATRIOT Act |
| U.S. Customary System of weights and measures |
| Usedom |
| Ushant |
| Usher, James |
| Ushuaia |
| Usk, Thomas |
| Usk |
| Üsküdar |
| Uslar Pietri, Arturo |
| USO |
| Uspallata Pass |
| Ussachevsky, Vladimir |
| USS Arizona Memorial |
| Ussher, James |
| USSR |
| Ussuri |
| Ussuriysk |
| Uster |
| Ústí nad Labem |
| Ustinov, Sir Peter |
| Ust-Kamenogorsk |
| Ust-Ordyn-Buryat Autonomous Area |
| Ust-Sysolsk |
| Ust Urt |
| Ustyurt |
| Usulután |
| Usumacinta |
| Usuman dan Fodio |
| Usumbura |
| usury |
| U.S. Virgin Islands National Monument |
| Utah, indigenous people of North America |
| Utah, state, United States |
| Utah, University of |
| Utah Lake |
| Utah State University |
| Utah War |
| Utamaro |
| Ute |
| uterus |
| Uther Pendragon |
| Uthman |
| Utica, ancient city, N Africa |
| Utica, city, United States |
| utilitarianism |
| utility |
| utility, public |
| Uto-Aztecan |
| Utopia |
| UTP |
| Utraquists |
| Utrecht, province, Netherlands |
| Utrecht, city, Netherlands |
| Utrecht, Peace of |
| Utrera |
| Utrillo, Maurice |
| Utsunomiya |
| Uttaranchal |
| Uttar Pradesh |
| Uub |
| Uuh |
| Uummannaq |
| Uuo |
| Uup |
| Uuq |
| Uusikaupunki |
| Uut |
| Uvalde |
| Uvedale, John |
| uvula |
| Uxbridge |
| Uxmal |
| Uz |
| Uzal |
| Uzbekistan |
| Uzhhorod |
| Uznam |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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