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NaicsCode: 541715 - Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
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| Business | Contact | City | State |
|---|---|---|---|
| Lin Engineering, Ltd. | Fred Lin | Westmont | IL |
| Streetwise Transportation Consultants, LLC | Shauna Hallmark, PhD. | Ankeny | IA |
| Urban GIS, Inc. | Keith A. Searles | Chicago | IL |