PURBA, T.; HARAHAP, E. M.; HANUM, C.; RAHMAWATY, R. Land Suitability Evaluation For Paddy , Corn and Soybean in Binangalom Watershed Toba Samosir District North Sumatera. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 33, n. 1, p. 131–144, 2017. Disponível em: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/7201. Acesso em: 23 jul. 2024.