PENILAIAN MANAJEMEN LINGKUNGAN GREEN SUPPLY CHAIN MANAGEMENT DENGAN PENERAPAN MODEL GSCOR (GREEN SUPPLY CHAIN OPERATION REFERENCE) BERDASARKAN STANDAR RSPO (ROUNDTABLE SUSTAINABLE PALM OIL) (STUDI KASUS: PT. PERKEBUNAN NUSANTARA V SEI. GARO) - DESADRI MUHAMMAD, - (2019)