Labuschagne, Nico2013-09-072005-07-052013-09-072003-04-012006-07-052005-06-30Gull, C 2002, Study of Pythium root diseases of hydroponically grown crops, with emphasis on lettuce , MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/25940 >H130/thhttp://hdl.handle.net/2263/25940Dissertation (MSc (Agric))--University of Pretoria, 2006.Please read the Resume in the section 06resume of this document© University of Pretoria 2002Pythium controlHydroponics diseases and pests controlRoot rots controlUCTDStudy of Pythium root diseases of hydroponically grown crops, with emphasis on lettuceDissertationhttp://upetd.up.ac.za/thesis/available/etd-06302005-102119/