Economic instruments in environmental policies: Why, when, where? Author Opschoor J.B. Date 1993 Source IUCN (ID: MON-062434) Publisher | Place of publication UNEP/ UNECE | Nairobi, Kenya ISBN WS.4/CRP.1 Pages 36 p. Document type Conference, symposium etc. document/report Language English Field of application International Subject Environment gen. Keyword Subsidy/incentive