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  1. By: Exner, Siegmund,
    Edition: 2. verb. Aufl.
    Publication info: Leipzig :W. Engelmann,1878.
    Holding Institution: MBLWHOI Library
  2. By: Exner, Siegmund,
    Publication info: Leipzig :Franz Deuticke,1891.
    Holding Institution: MBLWHOI Library
  3. By: Exner, Siegmund, - Ophthalmological Society of the United Kingdom. Library, - University College, London. Library Services.
    Publication info: Wien :Gerold,1894
    Holding Institution: UCL Library Services, University College London (UCL) (archive.org)