SKKD No. 750/UN25.5.1/TU.3/2019 "Efek Penambahan Vitamin C terhadap Aktivitas Klindamisin dalam Menghambat Pertumbuhan Streptococcus pneumoniae secara In Vitro (The Addition Effect of Vitamin C towards Clindamycin Inhibition Activity Against the Growth Streptococcus pneumoniae In Vitro)" (1)