Publisher
- World Resources Institute2
- Applied Science Associates1
- BirdLife International1
- National Energy Information Center (U.S.)1
- National Geophysical and Solar-Terrestrial Data Center1
- Purdue University Libraries1
- San Francisco (Calif.). Department Of Telecommunications and Information Services.1
- Science1
- Stanford Digital Repository1
- Tehama County Public Works1
- U.S. Fish and Wildlife Service1
- UNEP executive series1
- United States. National Ocean Service1