Forum 28
Washington, D.C., USA | May 17-19, 1972
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Forum 28, 1972
American Helicopter Society's (now Vertical Flight Society) 28th Annual National Forum and Trade Exhibit held May 17-19, 1972 at Washington, D.C., USA
American Helicopter Society's (now Vertical Flight Society) 28th Annual National Forum and Trade Exhibit held May 17-19, 1972 at Washington, D.C., USA