Yefta, Malyanus (2023) Studi Pengaruh Pemanggangan Bijih Terhadap Tingkat Pelindian Nikel, Kobalt, dan Besi dari Bijih Limonit Menggunakan Asam Klorida dan Asam Nitrat = The Effects of Pre-Heating on The Atmospheric Hydrochloric and Nitric Acid Leaching of Nickel, Cobalt, and Iron From Limonitic Ore. Skripsi thesis, Universitas Hasanuddin.