National training course on wetland management for Armenia : report of the consultancy mission by B.T. Ottow for the Professional and Entrepreneurial Orientation Union, Armenia Yerevan/Sevan, Armenia, 22-26 October 1999
B.T. Ottow; Ministry of Transport, Public Works and Water Management, Rijkswaterstaat, Institute for Inland Water Management and Waste Water Treatment = Ministerie van Verkeer en Waterstaat, Rijkswaterstaat, Rijksinstituut voor Integraal Zoetwaterbeheer
