By Suggs Robert L.   in Journal of the American Helicopter Society

ISSN:2161-6027|14|3|24-25

AHS International‎(1969)‎

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By Suggs Robert C.   in Journeys

ISSN:1752-2358|9|1|36-67

Berghahn Journals‎(2008)‎

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By Swift Wesley   Suggs Robert   Cooke William   in Earth, Moon, and Planets

ISSN:0167-9295|95|1-4|533-540

Springer Publishing Company ‎(2004)‎

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