Arado Ar 68 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Arado Ar 68" in English language version.

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aviation-library.org

  • Schneider, Helmut (1936). Flugzeug-Typenbuch 1936 (PDF) (in German) (1936 ed.). Leipzig, Germany: Herm. Beyer Verlag. p. 10. Archived from the original (PDF) on 8 September 2018. Retrieved 20 December 2018.

web.archive.org

  • Schneider, Helmut (1936). Flugzeug-Typenbuch 1936 (PDF) (in German) (1936 ed.). Leipzig, Germany: Herm. Beyer Verlag. p. 10. Archived from the original (PDF) on 8 September 2018. Retrieved 20 December 2018.