By Gaffey Troy M.   in Journal of the American Helicopter Society

ISSN:2161-6027|14|2|49-67

AHS International‎(1969)‎

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By Wernicke Kenneth G.   Gaffey Troy M.   in Journal of the American Helicopter Society

ISSN:2161-6027|12|4|55-60

AHS International‎(1967)‎

Access to resources Favorite 13.502806