How to know when to switch to microfilm.
D000043:Abstracting and Indexing; D003657:Decision Making; D004865:Equipment and Supplies, Hospital / Q000191:economics; D005069:Evaluation Studies as Topic; D005371:Filing; D006748:Hospital Departments / Q000458:organization & administration*; D006801:Humans; D008500:Medical Records Department, Hospital / Q000458:organization & administration*; D008843:Microfilming; D013997:Time Factors