Authors
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| Nickname | Name | Country | Action |
|---|---|---|---|
| NCSPA | National Corrugated Steel Pipe Association | US | Browse Items |
| NCSPA | National Corrugated Steel Pipe Association | US | Browse Items |
| LTAP | National Local Transportation Assistance Program Clearinghouse | US | Browse Items |
| NSC | National Safety Council Safety Shorts | US | Browse Items |
| NDOT | Nebraska Department of Transportation | US | Browse Items |
| NMDOT | New Mexico Department of Transportation | US | Browse Items |
| NTTC | Northwest Technology Transfer Center | US | Browse Items |
| OTT | Office of Technology Transfer, University of Idaho | US | Browse Items |
| OMT | Ontario Ministry of Transportation | US | Browse Items |
| P&D | Payne and Dolan | US | Browse Items |
| PDOT | Pennsylvania Department of Transportation (PDOT) | US | Browse Items |
| PA NY NJ | Port Authority of New York and New Jersey | US | Browse Items |
| PPEMA | Portable Power Equipment Manufacturers Association | US | Browse Items |
| PSU | Portland State University | US | Browse Items |
| PRIME | Public Risk Insurance Made Easy Division of Glatfelter Insurance Group | US | Browse Items |
| STS | Safety and Training Services | US | Browse Items |
| SF | SavaFilm | US | Browse Items |
| Stihl | Stihl, Incorporated | US | Browse Items |
| SHRP | Strategic Highway Research Program | US | Browse Items |
| Talus | Talus Resources | US | Browse Items |