TY - CONF A1 - Müller, Karsten A1 - Fischer, B. T1 - Objective condition assessment of sewer systems T2 - Strategic asset management of water supply and wastewater infrastructures : invited papers from the 2nd IWA Leading Edge Conference on Strategic Asset Management (LESAM), Lisbon, October [17 - 19] 2007 / ed. by Helene Alegre and Maria do Céu Almeida Y1 - 2009 UR - https://opus.bibliothek.fh-aachen.de/opus4/frontdoor/index/index/docId/5409 SN - 9781843391869 SP - 521 EP - 534 PB - IWA Publ. CY - London ER -