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  • 2017. Reg. 1.501(c)(4)-1(a)(2)(i)[permanent dead link] See 26 U.S.C. § 501(c)(4)(A). Sullivan, Sean (May 13, 2013). "What is a 501(c)4, anyway?". The Washington...
    94 KB (9,640 words) - 21:04, 22 June 2025
  • tax-deductible to the donors. The main differences between 501(c)(3) and 501(c)(4) organizations lie in their purposes and the tax-exempt benefits they receive...
    38 KB (3,987 words) - 23:01, 8 June 2025
  • Thumbnail for 2018–19 UEFA Champions League
    The 2018–19 UEFA Champions League was the 64th season of Europe's premier club football tournament organised by UEFA, and the 27th season since it was...
    62 KB (3,181 words) - 09:01, 2 June 2025
  • Thumbnail for C-4 (explosive)
    C-4 or Composition C-4 is a common variety of the plastic explosive family known as Composition C, which uses RDX as its explosive agent. C-4 is composed...
    31 KB (3,049 words) - 11:43, 25 May 2025
  • Thumbnail for Douglas C-47 Skytrain
    The Douglas C-47 Skytrain or Dakota (RAF designation) is a military transport aircraft developed from the civilian Douglas DC-3 airliner. It was used extensively...
    35 KB (3,906 words) - 11:59, 1 June 2025
  • Thumbnail for ARA General Belgrano
    ARA General Belgrano (C-4) was an Argentine Navy light cruiser in service from 1951 until 1982. Originally commissioned by the U.S. Navy as USS Phoenix...
    44 KB (5,092 words) - 15:28, 17 May 2025
  • Thumbnail for Ford Trimotor
    Ford Trimotor (redirect from Ford C-4)
    (160 kW) Wright J-5 Whirlwind radials. Carried 12 passengers. 39 built. 4-AT-C 4-AT-B with nose engine replaced by a 400 hp (300 kW) Pratt & Whitney R-1340...
    52 KB (6,145 words) - 06:25, 31 May 2025
  • Thumbnail for Microsoft Visual C++
    Windows and Xenix development) in early 1984. It shipped as a product in 1985. C 4.0 added optimizations and CodeView, a source-level debugger. C 5.0 added...
    50 KB (4,416 words) - 02:32, 18 June 2025
  • Thumbnail for C4 carbon fixation
    Sage RF, Pearcy RW (July 1987). "The Nitrogen Use Efficiency of C(3) and C(4) Plants: I. Leaf Nitrogen, Growth, and Biomass Partitioning in Chenopodium...
    38 KB (4,544 words) - 16:18, 4 June 2025
  • Thumbnail for Trident (missile)
    completely new design (although with some technologies adopted from the C-4). The C4 and D5 designations put the missiles within the "family" that started...
    24 KB (2,498 words) - 19:14, 11 May 2025
  • Thumbnail for Calcium chloride
    2/m 2/m (anhydrous, >217 °C) Lattice constant a = 6.259 Å, b = 6.444 Å, c = 4.17 Å (anhydrous, 17 °C) α = 90°, β = 90°, γ = 90° Coordination geometry...
    53 KB (4,585 words) - 02:34, 20 June 2025
  • Thumbnail for Grumman Gulfstream I
    G-IIB G-III G-IV/GIV-SP G-V G300/G350/G400/G450 G500/G550 G500/G600 G650/G650ER G700 Military versions C-4 C-11 C-20 C-20F/G/H C-37A C-37B C-38A X-54...
    18 KB (2,058 words) - 07:01, 14 November 2024
  • The 2018–19 UEFA Champions League knockout phase began on 12 February and ended on 1 June 2019 with the final at the Estadio Metropolitano in Madrid, Spain...
    44 KB (2,767 words) - 19:14, 23 March 2025
  • Thumbnail for UGM-96 Trident I
    UGM-96 Trident I (redirect from Trident C-4)
    US Navy. Archived from the original on September 12, 2007. Retrieved May 16, 2012. Wikimedia Commons has media related to UGM-93A Trident I C-4. v t e...
    3 KB (220 words) - 01:35, 17 May 2025
  • Thumbnail for Bücker Bü 131 Jungmann
    Air Force for training aircraft. Initial production, designated the Aero C-4, was powered by the Hirth HM 504A engine, with deliveries starting in April...
    24 KB (2,709 words) - 03:59, 19 June 2025
  • Thumbnail for FC Barcelona 6–1 Paris Saint-Germain FC
    FC Barcelona 6–1 Paris Saint-Germain FC was the result of the second leg of a UEFA Champions League tie which occurred on 8 March 2017 at the Camp Nou...
    26 KB (2,096 words) - 13:19, 18 June 2025
  • Thumbnail for South African Class H2 4-8-2T
    staged at Masons Mill in Pietermaritzburg. Class H2 4-8-2T, ex NGR Class C 4-8-2T modified Reid Tenwheeler, c. 1950 Class H2 no. 330 at the Outeniqua...
    14 KB (1,169 words) - 08:22, 10 March 2025
  • Thumbnail for Canadair North Star
    officially called the Canadair Four under the designations: North Star, DC-4M, C-4 and C-5. With the exception of the single C-5 (which had Pratt & Whitney...
    21 KB (2,433 words) - 12:55, 1 June 2025
  • Thumbnail for South African Class 10C 4-6-2
    Transvaal. In 1910, the Central South African Railways placed twelve Class 10-C 4-6-2 Pacific type steam locomotives in service. In 1912, these locomotives...
    21 KB (1,348 words) - 16:42, 17 June 2025
  • 3-Isopropylmalate dehydratase (EC 4.2.1.33) is an aconitase homologue, which catalyses the isomerisation of 2-isopropylmalate to 3-isopropylmalate, via...
    2 KB (159 words) - 14:52, 6 May 2025
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