Helm Carsten Economic theories of international environmental co-orperation - Cheltenham Edward Elgar 2000 - xiv, 192p. Bibliography p.167-83 cm. - New Horizons in Environmental Economics . ISBN: 3884.97 Source: 64997/ �49.95, 07/09/2000, IBD General Book Subjects--Topical Terms: Environmental Economics Dewey Class. No.: X:(G:55), P0