Publisher
- Ocean Data and Information Network for Africa2
- United States. Bureau of Transportation Statistics2
- United States. National Ocean Service2
- Applied Science Associates1
- Coastal Services Center (U.S.)1
- Eubank, Nicholas1
- National Energy Information Center (U.S.)1
- Nationale geologiske undersøgelser for Danmark og Grønland1
- Santa Clara County (Calif.). Planning Office1
- Tehama County Public Works1
- U.S. Fish and Wildlife Service1
- UNEP World Conservation Monitoring Centre1