Sopwith Dolphin (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sopwith Dolphin" in Polish language version.

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worldcat.org

Tomasz JanT.J. Kopański Tomasz JanT.J., Samoloty brytyjskie w lotnictwie polskim 1918-1930, Warszawa: Bellona, 2001, s. 41-46, ISBN 83-11-09315-6, OCLC 316548641 .