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2Result(s)for '"duPont Stephen"'
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By duPont Stephen in Journal of the American Helicopter Society
ISSN:2161-6027|1|4|27-31
AHS International(1956)
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21.527138
By duPont Stephen Montgomery Giles in Journal of the American Helicopter Society
ISSN:2161-6027|1|1|64-68
AHS International(1956)
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18.484922