1.
Dafisco R, Wulandari S, Arifin NF. Gambir, Timber and Coffee: A History of the Trade in Forest and Plantation Products on the East Coast of Sumatra in the 19th Century. JPHR [Internet]. 2025 Apr. 26 [cited 2026 May 30];2(2):151-63. Available from: https://journals.regalia-institute.com/index.php/JPHR/article/view/99