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HSM ZAR. ANALISA LAJU PERUBAHAN HARGA SAHAM LQ45 MENGGUNAKAN PERSAMAAN DIFERENSIAL. JRA [Internet]. 2020 Dec. 29 [cited 2025 Dec. 15];3(2):60-6. Available from: https://jra.politala.ac.id/index.php/JRA/article/view/68