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“SIRTU PRODUCTION DETERMINATION BASED ON MINING BREAK-EVEN POINT AT PT. MANOKWARI LEMON ISLAND: PENENTUAN PRODUKSI SIRTU BERDASARKAN TITIK IMPAS PENAMBANGAN PADA PT. PULAU LEMON MANOKWARI” (2023) JISTECH: Journal of Information Science and Technology, 7(1). Available at: https://www.jistechunipa.com/index.php/istech/article/view/131 (Accessed: 7 May 2026).