By Lewis Michael S.   in Journal of the American Helicopter Society

ISSN:2161-6027|31|2|19-26

AHS International‎(1986)‎

Access to resources Favorite 12.943169

By Jones David R.   Lewis Michael S.   in Proceedings of the Water Environment Federation

ISSN:1938-6478|2000|7|105-113

Water Environment Federation‎(2000)‎

Access to resources Favorite 8.88158