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<http://webisa.webdatacommons.org/209990806>	<http://www.w3.org/ns/prov#value>	"Other technical presentations addressed subjects such as Design and application of butterfly valves in water/sewage systems\" and Reconstruction of an industrial wastewater treatment plant during operation.Attracting tens of thousands of visitors and exhibitors, IFAT Entsorga should be considered a success story for European trade shows." .