Who´s number one? Author Salzman J., Ruhl J.B. Journal/Series The Environmental Forum : The Policy Journal of the Environmental Law Institute | Vol.26 (6); 36-42; 6 p. Date 2009 Source IUCN (ID: ANA-082413) Publisher | Place of publication The Environmental Law Institute | Washington, DC, USA Document type Article in periodical Language English Country/Territory United States of America Subject Environment gen. Keyword Survey/mapping