Noise characteristics of eight helicopters /
| Main Author: | |
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| Corporate Authors: | , |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington : Springfield, Va. :
Dept. of Transportation, Federal Aviation Administration, Systems Research & Development Service ; for sale by the National Technical Information Service,
1977
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| Series: | Report (United States. Federal Aviation Administration. Systems Research and Development Service) ;
FAA-RD-77-94 |
| Subjects: |