By Wiesner Wayne   Kohler Gary   in Journal of the American Helicopter Society

ISSN:2161-6027|19|3|2-9

AHS International‎(1974)‎

Access to resources Favorite 14.362149

By Wiesner Wayne   Snyder William J.   in Journal of the American Helicopter Society

ISSN:2161-6027|23|1|14-21

AHS International‎(1978)‎

Access to resources Favorite 11.668411