DETEKSI DAERAH TERCEMAR LUMPUR ASAM MENGGUNAKAN DATA LANDSAT 7 ETM BERDASARKAN SUHU PERMUKAAN TANAH (DETECTING CONTAMINATED AREA BY ACID SLUDGE USING LANDSAT 7 ETM DATA BASED ON LAND SURFACE TEMPERATURE) - Sulma, Sayidah (Indonesian National Institute of Aeronautics and Space (LAPAN), 2015)