By Stratton Warren K.   White Richard S.   in Journal of the American Helicopter Society

ISSN:2161-6027|14|1|67-71

AHS International‎(1969)‎

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By Field David M.   Finney Robert H.   Stratton Warren K.   in Journal of the American Helicopter Society

ISSN:2161-6027|18|1|29-35

AHS International‎(1973)‎

Access to resources Favorite 9.921066