Rubber-tree leaf diseases mapping using close range remote sensing images by Rasib, Abd. Wahid, Abd. Hamid, Nurmi-Rohayu, Mohd. Yaacob, Muhammad Latifi, Abd. Ghani, Zarawi, Idris, Nurul Hawani, Alvin, L. M. S., Hassan, Muhammad Imzan, M. Idris, Khairulnizam, Dollah, Rozilawati, Mohd. Salleh, Anuar, Ahmad, Mustaffa Anjang