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Sound from dual-rotating and multiple single-rotating propellers
| Author: | Hubbard, Harvey H |
|---|---|
| Year: | 1948 |
| Document Type: | N/A |
| Series: | NACA Technical Notes |
| Report Number: | NACA-TN-1654 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc54657/ |
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