Sasakawa International Environment Prize Author Burhenne W.E., Burhenne-Guilmin, F., Tolba, M.,, Collor F., Carlsson, I., Strong, M. Date 1991 Source IUCN (ID: MON-046204) Publisher | Place of publication ICEL /UNEP | Bonn, Germany, FR Pages 55 p. Conference name | place | date World Environment Day Ceremonies | Stockholm | 19910605 Language English, German Field of application International Subject Environment gen.