By Abebe Getachew   Malone John B.   Thompson Alexander R.   in SINET: Ethiopian Journal of Science

ISSN:0379-2897|27|1|1-8

Faculty of Science, Addis Ababa, Ethiopia‎(2004)‎

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By Pierce G. Alvin   Kunz Donald L.   Malone John B.   in Journal of the American Helicopter Society

ISSN:2161-6027|23|2|27-33

AHS International‎(1978)‎

Access to resources Favorite 8.549499