Some aspects of the helicopter noise problem
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Author
Publication
1954 - National Advisory Committee for Aeronautics, Washington, District of Columbia
Language
English
Word Count
3,500 words, Guess
Page Count
14 pages
Identifiers
- Open LibraryOL59783826M
- OCLC Control Number671748374
Subjects
Series Statement
- NACA Technical note -- 3239
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