“Yield and Chemical Composition of Tobacco Leaves of Different Cultivars as Affected by Four Levels of Potassium Chloride” (2006) Biological Sciences - PJSIR, 49(2), pp. 125–133. Available at: https://biostaging.pjsir.org/index.php/biological-sciences/article/view/1133 (Accessed: 21 March 2026).