title: Disk susceptibility testing of penicillin-resistant pneumococci.
authors: K P
authors: KP
authors: Klugman
authors: H J
authors: HJ
authors: Koornhof
mesh_terms: D008826:Microbial Sensitivity Tests / Q000592:standards*; D010403:Penicillin Resistance; D013296:Streptococcus pneumoniae / Q000187:drug effects*