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  1. By: Hansen, H. J. (Hans Jacob),
    Publication info: Copenhagen : Host & Son, 1897.
    Holding Institution: Smithsonian Libraries
  2. By: Hansen, H. J. (Hans Jacob), - Cossel, Louise von,
    Publication info: Copenhagen : Host & Son, 1897.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
  3. By: Hansen, H. J. (Hans Jacob),
    Publication info: Kjøbenhavn : B. Lunos, 1890.
    Holding Institution: Smithsonian Libraries
  4. By: With, Carl (Carl Johannes), - Hansen, H. J. (Hans Jacob),
    Publication info: Copenhagen : Printed by Bianco Luno, 1915.
    Holding Institution: Smithsonian Libraries
  5. By: Hansen, H. J. (Hans Jacob), - With, Carl (Carl Johannes),
    Publication info: Copenhagen : Printed by Bianco Luno, 1923.
    Holding Institution: Smithsonian Libraries
  6. By: Hansen, H. J. (Hans Jacob),
    Publication info: Copenhagen, Printed by Bianco Luno, 1908-20.
    Holding Institution: Smithsonian Libraries
  7. By: Hansen, H. J. (Hans Jacob),
    Publication info: KjØbenhavn : I Commission Has C. A. Reitzel, 1883.
    Holding Institution: Smithsonian Libraries
  8. By: Hansen, H. J. (Hans Jacob), - Deutsche Akademie der Wissenschaften zu Berlin. Humboldt-Stiftung. - Plankton Expedition
    Publication info: Kiel : Lipsius & Tischer, 1895.
    Holding Institution: Smithsonian Libraries
  9. By: Hansen, H. J. (Hans Jacob), - Sørensen, William, - Royal Society (Great Britain)
    Publication info: Cambridge [Eng.] University Press, 1904.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
  10. By: Hansen, H. J. (Hans Jacob),
    Publication info: Kjöbenhaven, [Bianco Luno], 1887.
    Holding Institution: Smithsonian Libraries
  11. By: Hansen, H. J. (Hans Jacob),
    Publication info: Cambridge, U.S.A. : Printed for the Museum, 1912.
    Holding Institution: Smithsonian Libraries
  12. By: Hansen, H. J. (Hans Jacob),
    Publication info: Cambridge, U.S.A. : Printed for the Museum, 1912.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
  13. By: Hansen, H. J. (Hans Jacob), - Siboga Expedition
    Publication info: Leyden, E. J. Brill, 1910.
    Holding Institution: Smithsonian Libraries
  14. By: Hansen, H. J. (Hans Jacob),
    Publication info: Leiden, Late E. J. Brill, 1919.
    Holding Institution: Smithsonian Libraries
  15. By: Hansen, H. J. (Hans Jacob),
    Publication info: Copenhagen, Gyldendalske Boghandel, 1921-30.
    Holding Institution: MBLWHOI Library