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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Young, R. T. (Robert Thompson),
    Publication info: Boston, R.G. Badger, ©1922
    Holding Institution: Internet Archive
  2. By: Young, R. T. (Robert Thompson),
    Publication info: Boston, R. G. Badger, [c1922]
    Holding Institution: NCSU Libraries
  3. By: Young, R. T. (Robert Thompson),
    Publication info: Boston, R.G. Badger, [c1922]
    Holding Institution: University of California Libraries
  4. By: Young, R. T. (Robert Thompson),
    Publication info: [Devils Lake], North Dakota biological station, 1924
    Holding Institution: MBLWHOI Library