Mahyuddin Dalimunthe, Syamsafitri, Rahmi Dwi Handayani Rambe, Indra Gunawan, and Nurhayati, “GROWTH OF RUBBER PLANT (Hevea Brasiliensis Muell. Arg) ON THE USE OF MATERIALS THAT CAN IMPROVE SOIL FERTILITY”, IJEBAS, vol. 2, no. 6, pp. 1315–1329, Dec. 2022.