| item | description | category | filter | more on... |
| DREN | Defense Research and Engineering Network | IT/General |
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| DREN | Defense Research and Engineering Network | Governmental/NASA |
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| DREN | Defense Research and Engineering Network | Business/General |
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| DREN | Defense Research and Engineering Network | Governmental/US Gov. |
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| DREN | Defense Research and Engineering Network | Governmental/Military |
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