Analysis Effectiveness of the Smallholder Oil Palm Rejuvanation Program (PSR) on Palm Oil Farmers in Silangkitang District, South Labuhanbatu Regency. j.sos.ekon.pertan. [Internet]. 2026 Jan. 22 [cited 2026 Aug. 21];21(3):129-44. Available from: https://journal.unhas.ac.id/index.php/jsep/article/view/48351