Yakovlev AIR-12 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Yakovlev AIR-12" in English language version.

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archive.org

Gordon, Yefim; Dmitry; Sergey Komissarov (2005). OKB Yakovlev. Hinkley: Midland Publishing. pp. 30-32. ISBN 1-85780-203-9.
Gordon, Yefim; Gunston, Bill (1997). Yakovlev aircraft since 1924 (1. publ. ed.). London: Putnam. pp. 33-35. ISBN 0851778720.