Trend in airplane design as indicated by approved type certificates. April 1, 1931 /
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| Description: | Washington, U.S. Govt. Print. Off., 1931. ii, 16 p. diagrs. 25 cm. |
|---|---|
| Language: | English |
| Series: | Aeronautics bulletin, no. 21 |
| Subject: | |
| Format: | Print Book |
| URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/3949274 |
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