Helicopter Warning System Avoids Obstacles and Mistakes.
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| Title: | Helicopter Warning System Avoids Obstacles and Mistakes. |
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| Authors: | Graves, Brad |
| Source: | San Diego Business Journal. 8/6/2012, Vol. 33 Issue 32, p4-34. 2p. |
| Database: | Business Source Ultimate |
| ISSN: | 87506890 |
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