Irsa, F., Irsan, F., Anwar, S., Nugroho, B. and Indriyati, L.T. 2017. ESTIMATION OF RETURNED BIOMASS AND NUTRIENTS IN OIL PALM PLANTATION IN ONE LIFE CYCLE. IJRDO-Journal of Agriculture and Research (ISSN: 2455-7668). 3, 6 (Jun. 2017), 19-32. DOI:https://doi.org/10.53555/ar.v3i6.78.