Simamora I, Manik S, Maudina V, Manullang O, Silalahi F. Perancangan Sistem Dinamik Terhadap Ketersediaan Beras Di Tapanuli Utara. jiwp [Internet]. 1Jul.2025 [cited 28Apr.2026];11(7.D):88-04. Available from: https://jurnal.peneliti.net/index.php/JIWP/article/view/10978