“Attack Level Of Coffee Fruit Borer Pest (Hypothenemus Hampei) And Branch Borer Pest (Xylosandrus Compactus) In Central Dempo District Pagaralam City”. 2023. Sainmatika: Jurnal Ilmiah Matematika Dan Ilmu Pengetahuan Alam 20 (1): 87-95. https://doi.org/10.31851/sainmatika.v20i1.9952.