By Dawson Seth   in Journal of the American Helicopter Society

ISSN:2161-6027|28|4|29-34

AHS International‎(1983)‎

Access to resources Favorite 17.035213

By Bousman William G.   Dawson Seth   in Journal of the American Helicopter Society

ISSN:2161-6027|31|3|45-53

AHS International‎(1986)‎

Access to resources Favorite 11.07303