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Polikarpov R-1 (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Polikarpov R-1" in Portuguese language version.

refsWebsite
Global rank Portuguese rank
2historyofwar.org
5,379th place
4,537th place
1aviastar.org
low place
low place

aviastar.org

historyofwar.org

  • Antill, Peter D. «Polikarpov R-1». historyofwar.org. Consultado em 22 de fevereiro de 2014 
  • Antill, Peter D. «Polikarpov MR-1». historyofwar.org. Consultado em 25 de fevereiro de 2014