Columbia subject headings:
Harvard subject headings:
Clean coal technologies--United States.
Federal aid to research--United States
U.S. Clean Coal Technology Demonstration Program--Appropriations and expenditures.
United States. Department of Energy. Office of Energy Efficiency and Renewable Energy--Appropriations and expenditures.
United States. Office of the Assistant Secretary for Fossil Energy--Appropriations and expenditures.
Princeton subject headings:
Federal aid to research--United States.
U.S. Clean Coal Technology Demonstration Program--Appropriations and expenditures.
United States. Department of Energy. Office of Energy Efficiency and Renewable Energy--Appropriations and expenditures.
United States. Office of the Assistant Secretary for Fossil Energy--Appropriations and expenditures.