By Chattopadhyay Aditi   Walsh Joanne L.   in Journal of the American Helicopter Society

ISSN:2161-6027|34|4|77-82

AHS International‎(1989)‎

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By Chattopadhyay Aditi   Walsh Joanne L.   in Journal of the American Helicopter Society

ISSN:2161-6027|35|2|69-69

AHS International‎(1990)‎

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By Walsh Joanne L.   Bingham Gene J.   Riley Michael F.   in Journal of the American Helicopter Society

ISSN:2161-6027|32|4|39-44

AHS International‎(1987)‎

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