Asbur, Y., Rambe, R. D. H., Purwaningrum, Y. and Kusbiantoro, D. (2018) “POTENTIAL OF SEVERAL WEEDS AS COVER CROP ON MATURE OIL PALM AREA”, Jurnal Penelitian Kelapa Sawit, 26(3), pp. 113-128. doi: 10.22302/iopri.jur.jpks.v26i3.69.