Kamu, A., Boniface, B., Awang, A. R., Hassan, A., Ayob, M. A., & Yulo, S. K. (2016). Attitude of Oil Palm Smallholders towards Ganoderma Disease. International Journal of Economics and Financial Issues, 6(7S), 177–180. Retrieved from https://econjournals.net.tr/index.php/ijefi/article/view/3603