Ningsih, Indri Ayu, Dedy Almasdy, and Alexie Herryandie Bronto Adi. 2019. “Evaluation and Development of Annual Drug Provides Planning at the Riau Islands Province Pharmaceutical Installation”. Jurnal Optimasi Sistem Industri 18 (2). Padang, ID:97-106. https://doi.org/10.25077/josi.v18.n2.p97-106.2019.