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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Krafft, Carl F. (Carl Frederick),
    Publication info: Lancaster, Pa, The Science press printing company, c1931
    Holding Institution: MBLWHOI Library
  2. By: Krafft, Carl F. (Carl Frederick),
    Publication info: Washington, D.C, c1938
    Holding Institution: MBLWHOI Library
  3. By: Krafft, Carl F. (Carl Frederick),
    Edition: (2nd ed.) ...
    Publication info: [Washington], 1928
    Holding Institution: MBLWHOI Library
  4. By: Krafft, Carl F. (Carl Frederick),
    Publication info: [Washington, D.C.], C.F. Kraft, c1927
    Holding Institution: MBLWHOI Library
  5. By: Krafft, Carl F. (Carl Frederick),
    Publication info: Washington, D.C, [c1930]
    Holding Institution: MBLWHOI Library