Laila A, Fathunikmah F. PENGARUH PEMBERIAN VITAMIN C DAN VITAMIN E TERHADAP KADAR HEMOGLOBIN PETUGAS OPERATOR SPBU DI WILAYAH KOTA PEKANBARU. JPK [Internet]. 23Oct.2018 [cited 23Nov.2024];6(1). Available from: https://jurnal.pkr.ac.id/index.php/JPK/article/view/367