A constitutional safety valve: The variance in zoning and land-use based environmental controls Author Cohen J. Journal/Series Boston College Environmental Affairs Law Review | Vol. 22(2); 307 - 364; 58 p. Date 1995 Source IUCN (ID: ANA-054261) Publisher | Place of publication Boston College Law School | Newton Centre, MA, USA Language English Country/Territory United States of America Subject Land & soil Keyword Constitutional law Land-use planning