Role of water in urban ecology Second International Environmental Symposium of the Royal Netherlands Land Development Society (Koninklijke Nederlandsche Heide Maatschappij), co-sponsored by the International Association for Ecology (INTECOL) and Elsevier Scientific Publishing Company, held in Amsterdam, the Netherlands, 27-31 August 1979 - Hengeveld, H. 1948- (Henk); Vocht, C. de (Cees); Bencko, V. (Developments in landscape management and urban planning, 1982)