McDonnell Douglas C-9 (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "McDonnell Douglas C-9" in Spanish language version.

refsWebsite

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3web.archive.org

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archive.today

"Historic C-9 heads to Andrews for retirement". US Air Force, 24 September 2005.

nasa.gov

jsc-aircraft-ops.jsc.nasa.gov

The History of C-9B Reduced Gravity Research Program Archivado el 15 de diciembre de 2009 en Wayback Machine.. NASA/JSC, March 25, 2008

navy.mil

"C-9B Skytrain II Completes 30 years of Continuous Fleet Support" Archivado el 4 de junio de 2011 en Wayback Machine.. US Navy, 2 June 2003.

web.archive.org

C-40A Clipper history page. US Navy, 16 November 2000.
"C-9B Skytrain II Completes 30 years of Continuous Fleet Support" Archivado el 4 de junio de 2011 en Wayback Machine.. US Navy, 2 June 2003.
The History of C-9B Reduced Gravity Research Program Archivado el 15 de diciembre de 2009 en Wayback Machine.. NASA/JSC, March 25, 2008