Fenty Maimunah Simbolon, Noverina Chaniago, and Joni Pranata Ginting. 2020. “RESPONSE OF FROM OIL PALM EMPTY FRUITS AND EM-4 COMPOSTING ON TOP SOIL MEDIA TO VEGETATIVE GROWTH OF COCOA ( Theobroma Cacao L.)”. International Journal of Educational Research Excellence, June, 39-45. https://doi.org/10.55299/ijere.vi.657.