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  1. By: Unzer, Johann August, - Laycock, Thomas, - Prochaska, Georg,
    Publication info: London The Sydenham Society 1851
    Holding Institution: University of Toronto - Gerstein Science Information Centre
  2. By: Klein, Jacob Theodor, - Unzer, Johann August, - Wandelaar, Jan,
    Publication info: Leidae & Gottingae, Apud Eliam Luzac, Jun, 1755
    Holding Institution: Multiple institutions