NTIS (National Technical Information Service)
| Description | The National Technical Information Service (NTIS) describes itself as "the largest, central resource for government-funded scientific, technical, engineering, and business related information available today". |
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| Subjects | Computer Engineering, Earth and Ocean Sciences, Mechanical Engineering |
| URL | https://ntrl.ntis.gov/NTRL/ |
| Subscription | Free |
| Alumni Access | No |
| Open Access | No |