crisanto, bernardus, & Novianto, M. (2024). THEORETICAL CALORIFIC VALUE ANALYSIS OF BRIQUETTE TEST RESULTS OF VARIATIONS OF BASIC MIXTURES OF ROBUSTA AND ARABIKA COFFEE. Mechanical, Energy and Material (METAL), 2(1), 01–06. Retrieved from https://ejournal.widyakarya.ac.id/index.php/metal/article/view/84