1. The use of the membrana tympani as a phonautograph and logograph Author(s): Blake, Clarence J. (Clarence John), 1843-1919, author Publication: New York : William Wood & Company, 1879 Subject(s): SoundCopying ProcessesEquipment and SuppliesTympanic Membrane
2. [Copyflo machine produces photocopied articles from microfilm] Publication: Produced: [1957?] Subject(s): Libraries, MedicalLibrary AutomationCopying ProcessesLibrary MaterialsNational Library of Medicine (U.S.)
