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Influence of Ribs on Strength of Spars
| Author: | Ballenstedt, L. |
|---|---|
| Year: | 1923 |
| Document Type: | N/A |
| Series: | NACA Technical Notes |
| Report Number: | NACA-TN-139 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc53920/ |
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