crisanto bernardus, Novianto M. THEORETICAL CALORIFIC VALUE ANALYSIS OF BRIQUETTE TEST RESULTS OF VARIATIONS OF BASIC MIXTURES OF ROBUSTA AND ARABIKA COFFEE. METAL [Internet]. 2024 Jun. 30 [cited 2024 Oct. 12];2(1):01-6. Available from: https://ejournal.widyakarya.ac.id/index.php/metal/article/view/84