A short guide to the Rio Declaration Author Kovar J.D. Journal/Series Colorado Journal of International Environmental Law and Policy | Vol. 4(1); 118 - 140; 23 p. Date 1993 Source IUCN (ID: ANA-049092) Publisher | Place of publication The University Press of Colorado | Niwot, CO, USA Language English Field of application International Subject Environment gen. Keyword Policy/planning Soft law