(1)
Romiyanto, R.; Barus, B.; Sudadi, U. Spatial Model of Land Degradation and Water Pollution Caused by Illegal Gold Mining Activities in Raya Watershed, W. J. Il. Tan. Lingk. 2015, 17 (2), 47-53. https://doi.org/10.29244/jitl.17.2.47-53.