Future problems of soaring flight : report of 1932 Rhon soaring contest
01.05.1933
Sonstige
Keine Angabe
Englisch
Twelfth Rhön soaring-flight contest, 1931
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|Eleventh Rhön soaring-flight contest, 1930
TIBKAT | 1931
|The 1929 Rhon soaring-flight contest
NTRS | 1930
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