Barker, K N The effects of an experimental medication system on medication errors and costs. II. The cost study. [electronic resource] - American journal of hospital pharmacy Jul 1969 - 388-97 p. digital Publication Type: Journal Article ISSN: 0002-9289 Subjects--Topical Terms: Costs and Cost AnalysisMedication ErrorsMedication Systems, HospitalPharmacy Service, Hospital