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Lockheed SR-71 Blackbird (Estonian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Lockheed SR-71 Blackbird" in Estonian language version.

refsWebsite
Global rank Estonian rank
1smithsonianmag.com
503rd place
1,029th place

smithsonianmag.com

  • Edwards, Owen (juuli 2009). "The Ultimate Spy Plane". Smithsonian Magazine. Vaadatud 27. november 2017. The 32 Blackbirds cost an average of $34 million each.