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Wongchana B, Issarakraiasila M, Maneepong S. Nitrogen and Zinc on Growth and Nutrient Concentrations in Leaf of Pummelo cv. Kao - thongdee (Citrus maxima (Burm.) MerrĀ . Thai Agric.Res.J. [internet]. 2011 Dec. 31 [cited 2026 Sep. 30];29(3):248-61. available from: https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/91075