Workplan 1999-2000 : for co-operation between the institute fot Inland Water Management and Waste water Treatment RIZA, Lelystad, the Netherlands, the Danube Delta Biosphere Reserve Authority and the Danube Delta Institute, Tulcea, Romania

Workplan 1999-2000 : for co-operation between the institute fot Inland Water Management and Waste water Treatment RIZA, Lelystad, the Netherlands, the Danube Delta Biosphere Reserve Authority and the Danube Delta Institute, Tulcea, Romania