By Piziali Raymond A.   Felker Fort F.   in Journal of the American Helicopter Society

ISSN:2161-6027|32|1|54-59

AHS International‎(1987)‎

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By Gates Charles A.   Piziali Raymond A.   DuWaldt Frank A.   in Journal of the American Helicopter Society

ISSN:2161-6027|8|2|14-27

AHS International‎(1963)‎

Access to resources Favorite 11.120216