Author/Creator
- SpringerLink (Online service)159
- Geological Survey (U.S.), issuing body109
- United States. National Aeronautics and Space Administration60
- Geological Survey (U.S.)56
- National Renewable Energy Laboratory (U.S.), issuing body46
- United States38
- Pacific Marine Environmental Laboratory (U.S.)34
- Alaska Fisheries Science Center (U.S.)30
- Atlantic Oceanographic and Meteorological Laboratories28
- U.S. Coast and Geodetic Survey27
- Great Lakes Environmental Research Laboratory23
- Environmental Research Laboratories (U.S.)22
- Goddard Space Flight Center20
- United States. National Weather Service19
- United States. Department of Energy. Office of Energy Efficiency and Renewable Energy, sponsoring body18
- United States. Environmental Protection Agency. Office of Mobile Source Air Pollution Control. Emission Control Technology Division. Test and Evaluation Branch, issuing body18
- United States. Environmental Protection Agency. Office of Mobile Source Air Pollution Control. Emission Control Technology Division. Standards Development and Support Branch, issuing body17
- United States. National Oceanic and Atmospheric Administration17
- Shoemaker, Abraham15
- U.S. Air Force Geophysics Laboratory15