Dika Adi Nugroho, Rahma Hayati. Persebaran Komoditas Kopi Arabika dan Robusta di Kawasan Lereng Gunung Ungaran, Desa Ngesrepbalong . Mutiara [Internet]. 2026 Jun. 30 [cited 2026 Sep. 2];4(3):239-5. Available from: https://journal.staiypiqbaubau.ac.id/index.php/Mutiara/article/view/3249