InvestigationOpen accessPhrase in the titleProductivity of Lettuce Varieties in Conveyor Cultivation in the Open and Protected Soil of the Southeast of KazakhstanGulzhan Kussainova, Mirjana Vasić, Dina Smagulova et al.OnLine Journal of Biological Sciences, Vol. 18, Issue 2 · 14 Apr 2018 · 7,456 accessesView PDFCite