INDIKATOR SOSIAL – EKONOMI UNTUK PENGUKURAN KINERJA LINGKUNGAN KAWASAN INDUSTRI BERBASIS KELAPA SAWIT KEK SEI MANGKEI (IDENTIFICATION OF SOCIAL – ECONOMIC INDICATORS FOR ENVIRONMENTAL PERFORMANCE MEASUREMENT INDUSTRIAL AREAS BASED ON PALM OIL). Inovasi. 2018;15(2):163-169. doi:10.33626/inovasi.v15i2.74