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  1. By: Smith, George, - Delaware County Institute of Science.
    Publication info: Philadelphia, Printed by Henry B. Ashmead, 1862
    Holding Institution: University of Pittsburgh Library System
  2. By: Smith, George, - Delaware County Institute of Science.
    Publication info: Philadelphia, Pa, H.B. Ashmead, 1862
    Holding Institution: Allen County Public Library
  3. By: Smith, George, - Delaware County Institute of Science.
    Publication info: Philadelphia, Printed by H.B. Ashmead, 1862
    Holding Institution: Library of Congress
  4. By: Delaware County Institute of Science.
    Publication info: Media, Pa, The Institute, 1906-
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library