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Bibliotheca entomologica, die Litteratur über das ganze Gebiet der Entomologie, bis zum Jahre 1862.
By: Hagen, Hermann August,
Publication info: LeipzigW. Engelmann1862-63
Contributed by: Gerstein - University of Toronto (archive.org)
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Bibliotheca entomologica. Die Litteratur über das ganze Gebiet der Entomologie, bis zum Jahre 1862. Von Hermann August Hagen.
By: Hagen, Hermann August,
Publication info: Leipzig :W. Engelmann,1862-63.
Contributed by: Smithsonian Institution Libraries
BHL Collections: Smithsonian Institution Libraries
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Monograph of the North American Astacidae / by Dr. Hermann A. Hagen
By: Hagen, Hermann August,
Publication info: Cambridge :[University Press: Welch, Bigelow & co.] :1870.
Contributed by: Harvard University, MCZ, Ernst Mayr Library
BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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Monograph of the North American Astacidæ.
By: Hagen, Hermann August,
Publication info: Cambridge[University Press: Welch, Bigelow, & Co.]1870.
Contributed by: Smithsonian Institution Libraries
BHL Collections: Smithsonian Institution Libraries
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On some insect deformities / by Hermann A. Hagen.
By: Hagen, Hermann August,
Publication info: Cambridge [Mass.] :University Press,1876.
Contributed by: Harvard University, MCZ, Ernst Mayr Library
BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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Synonymia libellularum europaearum
By: Hagen, Hermann August,
Publication info: Regimontii Prussorum :impressit E.J. Dalkowski,[1840]
Contributed by: University of Illinois Urbana Champaign
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Synopsis of the neuroptera of North America. With a list of the South American species. Prepared for the Smithsonian institution by Hermann Hagen.
By: Hagen, Hermann August, - Uhler, Philip R.
Publication info: Washington,Smithsonian institution,1861.
Contributed by: MBLWHOI Library, Woods Hole
BHL Collections: MBLWHOI Library, Woods Hole
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Synopsis of the neuroptera of North America. With a list of the South American species. Prepared for the Smithsonian institution by Hermann Hagen.
By: Hagen, Hermann August, - Uhler, Philip R.
Publication info: Washington,Smithsonian institution,1861.
Contributed by: University of California Libraries (archive.org)
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