Publisher
- Energy for Sustainable Development Africa1
- Environmental Systems Research Institute (Redlands, Calif.)1
- National Geophysical Data Center1
- Nationale geologiske undersøgelser for Danmark og Grønland1
- Nature Conservancy (U.S.)1
- Northeast Region Ocean Council1
- Sierra Nevada Conservancy1
- Tehama County Public Works1
- U.S. Fish and Wildlife Service1
- UNEP World Conservation Monitoring Centre1
- UNEP executive series1
- United States. Department of Housing and Urban Development1
- United States. Environmental Protection Agency, Region IX1