Asraf H., M.; Md Tahir, N.; Dalila K.A., N.; Hussain, A. An Agricultural Tele-Monitoring Method in Detecting Nutrient Deficiencies of Oil Palm Leaf. IJET 2018, 7 (4.11), 266-270. https://doi.org/10.14419/ijet.v7i4.11.21390.