IMPLEMENTING GOOD AGRICULTURE PRACTICE (GAP) AND ITS IMIMPLEMENTING GOOD AGRICULTURE PRACTICE (GAP) AND ITS IMPACT ON THE COFFEE PRODUCTIVITY OF PANTI SUB-DISTRICT JPACT ON THE COFFEE PRODUCTIVITY OF PANTI SUB-DISTRICT JEMBER REGENCY, EAST JAVA, INDONESIA. JournalNX 2021, 6 (06), 374-384.