Schweizerische Zeitschrift für HydrologieSeptember 1970, Volume 32, Issue 2, pp 600–600 | Cite asThirteenth Water Quality Conference to be held in Urbana, Illinois, on 15 and 16 February 1971 onVirus and Water Quality: Occurrence and ControlArticle 11 Downloads This is a preview of subscription content, log in to check access.Copyright information© Birkhäuser Verlag 1970