Fraher, M A Combined action of beta-lactamase-resistant and beta-lactamase-susceptible penicillins on 20 strains of Pseudomonas aeruginosa. [electronic resource] - Antimicrobial agents and chemotherapy 1967 - 711-5 p. digital Publication Type: Journal Article Subjects--Topical Terms: Ampicillin--pharmacologyDrug SynergismMethicillin--pharmacologyOxacillin--pharmacologyPenicillin G--pharmacologyPenicillins--pharmacologyPseudomonas aeruginosa--drug effectsbeta-Lactamase Inhibitors