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Wright Aeronautical Whirlwind 1929 First Edition Installation, Inspection, & Maintenance (WRWHIRL)
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Wright Aeronautical Whirlwind 7,9 R-760E & R-975E Installation, Operation, Maintenance (WR7,9-42-M-C)
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Wright Aeronautical Whirlwind 7,9 R-760E & R-975E Maintenance Manual (WR7,9-40-M-C)
$33.00