(1)
Harianti, M.; Sutandi, A.; Saraswati, R.; Maswar, M.; Sabiham, S. ENZYME ACTIVITY IN RELATION TO TOTAL K, Ca, Mg, Fe, Cu AND Zn IN THE OIL PALM RHIZOSPHERE OF RIAU’S PEATLANDS, INDONESIA. BIOTROPIA 2018, 25, 211-223.