Izzati Abd Karim, Nurul, Samira Albati Kamaruddin, and Rozaimi Che Hasan. 2018. “Performance of Soil Water Content Using Ground Penetrating Radar With Different Antenna Frequencies”. International Journal of Engineering and Technology 7 (2.29): 815-20. https://doi.org/10.14419/ijet.v7i2.29.14263.