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Description
| Manufacturer: | Douglas | |
| Base model: | O-31 | |
| Designation: | Y1O-31 | |
| Version: | C | |
| Designation System: | U.S. Air Force | |
| Designation Period: | 1924-1942 | |
| Basic role: | Observation | |
| Status: | Prototype | |
Specifications
| Not Yet Available |
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Description
Specifications
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