Antibacterial Activity of Rhizome Extracts of Zingiber zerumbet (L.) Roscoeex Sm. Against Streptococcus pneumoniae: Aktivitas Antibakteri Ekstrak Rimpang Lempuyang Gajah (Zingiber zerumbet (L.) Roscoeex Sm.) Terhadap Bakteri Streptococcus pneumoniae. pssh. 2022;3:1007-1016. doi:10.21070/pssh.v3i.361