Ying, Ho Soo, Mohd Effendi bin Wasli, and Mugunthan Perumal. 2018. “SOIL CHARACTERISTICS UNDER INTENSIFIED SHIFTING CULTIVATION FOR UPLAND RICE CULTIVATION IN UPLAND SABAL, SARAWAK, MALAYSIA”. BIOTROPIA 25 (1):72-83. https://doi.org/10.11598/btb.2018.25.1.799.