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  1. By: Heilprin, Angelo, - Wagner Free Institute of Science.
    Publication info: Philadelphia, The Institute, 1887
    Holding Institution: University of California Libraries
  2. By: Wagner Free Institute of Science.
    Publication info: Philadelphia, Wagner Free Institute of Science of Philadelphia, 1887-1927
    Holding Institution: Multiple institutions
  3. By: Scott, William Berryman, - Wagner Free Institute of Science.
    Publication info: Philadelphia, Wagner Free Institute of Science, 1899
    Holding Institution: Smithsonian Libraries and Archives