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Abacus for the reduction of English measures to the metric system and vice versa
| Author: | Tenani, Mario |
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| Year: | 1921 |
| Document Type: | N/A |
| Series: | NACA Technical Memorandums |
| Report Number: | NACA-TM-30 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc53628/ |
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