Wahyuni Allfazmy, P. , Warlem, N. and Amran, R. 2022. Faktor Risiko Penyakit Paru Obstruksi Kronik (PPOK) di Semen Padang Hospital (SPH). Scientific Journal. 1, 1 (Jan. 2022), 19–23. DOI:https://doi.org/10.56260/sciena.v1i1.18.