Ismanto, Agus, and Yudi Dwi Saputro. 2017. “ANALISIS KIMIA KAYU KARET ( Heavea Brasiliensis Muell. Arg. ) DIAWETKAN SECARA TRADISIONAL”. Sains Natural: Journal of Biology and Chemistry 4 (2):180-86. https://doi.org/10.31938/jsn.v4i2.91.