Ying, H. S., Wasli, M. E. bin and Perumal, M. (2018) “SOIL CHARACTERISTICS UNDER INTENSIFIED SHIFTING CULTIVATION FOR UPLAND RICE CULTIVATION IN UPLAND SABAL, SARAWAK, MALAYSIA”, BIOTROPIA, 25(1), pp. 72–83. doi: 10.11598/btb.2018.25.1.799.