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- Geological Survey (U.S.)7
- United States. Environmental Protection Agency4
- Kloss, Christopher3
- Low Impact Development Center, Inc3
- United States. Congress. House. Committee on Science and Technology (2007). Subcommittee on Technology and Innovation3
- Harned, Douglas2
- Instituto Mexicano del Transporte2
- Lopes, Thomas J.2
- Straub, David E.2
- United States2
- United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Water and Wildlife, author2
- Bitting, Jennifer1
- Corsi, Steven R.1
- Dionne, Shannon G.1
- Geological Survey (U.S.), issuing body1
- Geología y Medio Ambiente1
- Granato, Gregory E.1
- Hawaii. Dept. of Transportation1
- Lukes, Robb1
- Maine. Dept. of Transportation, sponsoring body1