MARBUN, P.; NASUTION, Z.; HANUM, H.; KARIM, A. Classification of Inceptisol Soil on Robusta Coffee Plantation in Silima Pungga . International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 30, n. 5, p. 20–27, 2016. Disponível em: https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/6499. Acesso em: 26 apr. 2024.