?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=AGUSTIAN%2C+WEWEN&rft.aulast=AGUSTIAN&rft.aufirst=WEWEN&rft.date=18+July+2023&rft.degree=Other&rft.inst=Institut+Teknologi+Nasional+Yogyakarta&rft.title=Analisis+klasifikasi+massa+batuan+dengan+metode+slope+mass+rating+pada+lereng+tambang+emas+PIT+Gosowong+North+PT.+Nusa+Halmahera+Minerals%2C+Kabupaten+Halmahera+Utara%2C+Provinsi+Maluku+Utara