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An Optical Altitude Indicator for Night Landing
| Author: | Warner, John A. C. |
|---|---|
| Year: | 1923 |
| Document Type: | N/A |
| Series: | NACA Technical Notes |
| Report Number: | NACA-TN-123 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc53799/ |
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