@article{1374304, note = {Shipping list no.: 2020-0174-M.}, url = {http://library.usi.edu/record/1374304}, title = {States' role in protecting air quality : principles of cooperative federalism : hearing before the Subcommittee on Clean Air and Nuclear Safety of the Committee on Environment and Public Works, United States Senate, One Hundred Sixteenth Congress, first session, March 5, 2019.}, recid = {1374304}, pages = {iii, 128 pages :}, }