| Title 29 1910. 1000-End | Rowman & Littlefield Publishing Group, Incorporated | |
| Code of Federal Relations 2008 | Rowman & Littlefield Publishing Group, Incorporated | |
| 2008 40 CFR 260-265, Protection of Environment | Rowman & Littlefield Publishing Group, Incorporated | |
| Code of Federal Regulations Title 37 Patents, | Rowman & Littlefield Publishing Group, Incorporated | |
| Title 40 Env 260-265 Large | Rowman & Littlefield Publishing Group, Incorporated |
