SINAGA, Domini Lestari; TAMPUBOLON, Togi. ANALISIS PERUBAHAN LINGKUNGAN PANAS BUMI TINGGI RAJA KABUPATEN SIMALUNGUN. EINSTEIN (e-Journal), [S. l.], v. 7, n. 3, p. 9–14, 2019. DOI: 10.24114/einstein.v7i3.15162. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/einsten/article/view/15162. Acesso em: 12 oct. 2025.