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Wiśniewski 1912 Monoplane
Engineer Bronisław Wiśniewski built at Grażewski Factory a monoplane with 20hp engine in 1912 but the construction details and information about flights are unknown.
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Wiśniewski 1912 Monoplane
Engineer Bronisław Wiśniewski built at Grażewski Factory a monoplane with 20hp engine in 1912 but the construction details and information about flights are unknown.
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