Forum 23
Washington, D.C., USA | May 10-12, 1967
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Forum 23, 1967
American Helicopter Society's (now Vertical Flight Society) 23rd Annual National Forum held May 10-12, 1967 at Washington, D.C. USA
American Helicopter Society's (now Vertical Flight Society) 23rd Annual National Forum held May 10-12, 1967 at Washington, D.C. USA
