Škoda-Kauba SK 257 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Škoda-Kauba SK 257" in English language version.

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1000aircraftphotos.com

oldmachinepress.com

  • Pearce, William. "Skoda-Kauba V4, Sk 257, and V5". oldmachinepress.com. Retrieved 25 May 2016.