By Egolf T. Alan   Sparks S. Patrick   in Journal of the American Helicopter Society

ISSN:2161-6027|32|3|15-24

AHS International‎(1987)‎

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By Lorber Peter F.   Egolf T. Alan   in Journal of the American Helicopter Society

ISSN:2161-6027|35|3|32-42

AHS International‎(1990)‎

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By Landgrebe Anton J.   Taylor Robert B.   Egolf T. Alan   Bennett John C.   in Journal of the American Helicopter Society

ISSN:2161-6027|27|4|74-83

AHS International‎(1982)‎

Access to resources Favorite 2.3795273