1.
The Factors in the Emergence of Smallholder Rubber Plantation in Tapanuli: 1906 - 1942. Internationalj.ofCultureandArtStudies [Internet]. 2019 Oct. 25 [cited 2026 Feb. 4];3(1):22-9. Available from: https://idjpcr.usu.ac.id/ijcas/article/view/2623