Trading emissions to clean the air: Exchanges few but savings many Author Burtraw D. Journal/Series Resources | No. 122; 3 - 6; 4 p. Date 1996 Source IUCN (ID: ANA-057534) Publisher | Place of publication Resources for the Future | Washington, DC, USA Language English Country/Territory United States of America Subject Air & atmosphere Keyword Air quality/air pollution Subsidy/incentive Authorization/permit