title: [New semisynthetic and natural cephalosporins].
authors.forename: G S
authors.initials: GS
authors.lastname: Rozenfel'd
mesh_terms: D002511:Cephalosporins / Q000138:chemical synthesis / Q000494:pharmacology / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D006801:Humans; D013329:Structure-Activity Relationship
chemical_list: D002511:Cephalosporins
vernacular_title: Novye polusinteticheskie i prirodnye tsefalosporiny.