AryaniA., SyahputriY. and HermawanH. (2019) “VALUE CHAIN PALM OIL INDUSTRY ANALYSIS ON THE POLYOL POLYESTER PATHWAY”, IJTI International Journal of Transportation and Infrastructure eISSN 2597-4769 pISSN 2597-4734, 2(2), pp. 105-116. doi: 10.29138/ijti.v2i2.964.