Wahid, Kadar (2021) Perbaikan Sifat Kimia Tanah Purna Tambang Nikel dan Pertumbuhan Mucuna sp. dengan Penambahan Biochar Tandan Kosong Kelapa Sawit dan Kalsium Karbonat = The Improvement of Post-mining Nickel Chemical Soil Properties and Growth of Mucuna sp. with Biochar from Empty Bunches of Palm Oil and Calcium Carbonates. Skripsi thesis, Universitas Hasanuddin.