Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Emissions Monitoring and Analysis Division, Emission Measurement Center.
2000
Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Emissions, Monitoring and Analysis Division, Emission Measurement Center, [1997]
1997
Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Air Quality Planning and Standards, [2000]
2000
Research Triangle Park, N.C. : U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Air Quality Planning and Standards, [2000]
2000
Midwest Symposium on Therapeutic Recreation.
Columbia, Mo. [etc.] : Dept. of Recreation and Park Administration, Extension Division, Technical Education Services, Univ. of Missouri [etc.]
1984