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1
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2by Immelmann, FranzSubjects “...World War, 1914-1918 Aerial operations, German....”
Published 1984
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3by Charlton, L. E. O. (Lionel Evelyn Oswald), 1879-1958Subjects “...World War, 1914-1918 Aerial operations, German....”
Published 1936
Book