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ReferencesEdit

  1. ^ Campbell, B.; Walker, G. A. H.; Yang, S. (1988). "A search for substellar companions to solar-type stars". The Astrophysical Journal. 331: 902. Bibcode:1988ApJ...331..902C. doi:10.1086/166608.
  2. ^ U.S. Senate, Committee on Energy and Natural Resources, "Greenhouse Effect and Global Climate Change, part 2" 100th Cong., 1st sess., 23 June 1988, p. 44: "global warming has reached a level such that we can ascribe with a high degree of confidence a cause and effect relationship between the greenhouse effect and the observed warming."
  3. ^ Conway, Erik (January 28, 2012). "What's in a Name? Global Warming vs. Climate Change". NASA.
  4. ^ Story, Derrick (February 18, 2000). "From Darkroom to Desktop — How Photoshop Came to Light". Story Photography. Archived from the original on June 26, 2007. Retrieved August 20, 2012.
  5. ^ Holmes, Gary P.; et al. (1988). "Chronic fatigue syndrome: a working case definition". Annals of Internal Medicine. 108 (3): 387–9. doi:10.7326/0003-4819-108-3-387. PMID 2829679.
  6. ^ Campling, Frankie; Sharpe, Michael (2000). Chronic Fatigue Syndrome (CFS/ME). Oxford University Press. pp. 14–15. ISBN 0-19-263049-0. Retrieved April 2, 2008.
  7. ^ Wilson, Donald; Wilson, Jane (2003). The Pride of African American History. AuthorHouse. p. 25. ISBN 978-1-4107-2873-9.
  8. ^ Henderson, Susan K. (1998). African-American Inventors III. Capstone Press. pp. 9–13. ISBN 978-1-56065-698-2.