By Saal Karl W.   Cole Jeffrey L.   in Journal of the American Helicopter Society

ISSN:2161-6027|35|3|12-21

AHS International‎(1990)‎

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By Cole Jeffrey L.   Evans Charles W.   Greenberg Charles E.   Saal Karl W.   in Journal of the American Helicopter Society

ISSN:2161-6027|46|2|117-128

AHS International‎(2001)‎

Access to resources Favorite 9.339113