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  2. Visa requirements for United States citizens - Wikipedia

    en.wikipedia.org/wiki/Visa_requirements_for...

    Passport/EDL is required for entry. Under certain circumstances, a government issued photo ID and proof of citizenship may be used in lieu a passport on a case-by-case basis. [548] [549] [523] Niue: Visa not required 30 days [550] New Caledonia: Visa not required 90 days 90 days within any 180-day period [551] Northern Mariana Islands: Freedom ...

  3. Visa policy of the United States - Wikipedia

    en.wikipedia.org/wiki/Visa_policy_of_the_United...

    Alternatively, they may apply online for an electronic authorization providing a copy of their birth certificate or expired travel document, a copy of their identification card (or of an accompanying adult's identification card if under age 18), itinerary, and a fee of 50 USD for verification of vital records (no fee if under age 18). [61]

  4. Mikoyan-Gurevich MiG-21 - Wikipedia

    en.wikipedia.org/wiki/Mikoyan-Gurevich_MiG-21

    The MiG-21 jet fighter was a continuation of Soviet jet fighters, starting with the subsonic MiG-15 and MiG-17, and the supersonic MiG-19.A number of experimental Mach 2 Soviet designs were based on nose intakes with either swept-back wings, such as the Sukhoi Su-7, or tailed deltas, of which the MiG-21 would be the most successful.

  5. Greenhouse effect - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_effect

    Energy flux is expressed in units of W/m 2, which is the number of joules of energy that pass through a square meter each second. Most fluxes quoted in high-level discussions of climate are global values, which means they are the total flow of energy over the entire globe, divided by the surface area of the Earth, 5.1 × 10 14 m 2 (5.1 × 10 8 ...

  6. List of official business registers - Wikipedia

    en.wikipedia.org/wiki/List_of_official_business...

    Polish Medicines Verification Organisation Foundation (KOWAL) - national operator of the European Medicines Verification System (non-searchable) National Chamber of Laboratory Diagnosticians (KIDL) – List of Diagnostic Medical Laboratories – list of healthcare entities operating a clinical laboratory (in Polish) [207] (searchable)

  7. Sheffield - Wikipedia

    en.wikipedia.org/wiki/Sheffield

    The name Sheffield, has its origins in Old English and derives from the name of a principal river in the city, the River Sheaf.This name, in turn, is a corruption of shed or sheth, which refers to a divide or separation.