KURNIAWAN AS, HARTONO HG. Identifikasi Awal Keberadaan Gunung Api Purba di Daerah Sejati, Giriwoyo, Wonogiri, Jawa Tengah. Prosiding Seminar Nasional ReTII [Internet]. 2017Jan.15 [cited 2025Apr.19];. Available from: https://journal.itny.ac.id/index.php/ReTII/article/view/253