Trading grandfathered air - a new, simpler approach Author Potts B.H. Journal/Series The Harvard Environmental Law Review | Vol. 31(1); 115- 162; 48 p. Date 2007 Source IUCN (ID: ANA-080074) Publisher | Place of publication Harvard Law School | Cambridge, MA, USA Document type Article in periodical Language English Country/Territory United States of America Subject Air & atmosphere Keyword Emissions trading Emissions