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  1. By: Crotch, George Robert,
    Publication info: Cambridge, [Printed for the author by C.J. Clay, at the University Press], 1863
    Holding Institution: University of Toronto - Thomas Fisher Rare Book Library
  2. By: Crotch, George Robert, - Austin, E. P.
    Publication info: Salem, Naturalists' Agency, 1873
    Holding Institution: Smithsonian Libraries and Archives
  3. By: Crotch, George Robert,
    Publication info: Salem, Mass, Naturalists' Agency, 1880
    Holding Institution: University of California Libraries
  4. By: Crotch, George Robert,
    Publication info: Salem, Mass, Naturalists' Agency, 1873
    Holding Institution: Canadiana.org
  5. By: Crotch, George Robert,
    Publication info: London, E.W. Janson, 1874
    Holding Institution: Smithsonian Libraries and Archives
  6. By: Crotch, George Robert,
    Publication info: Cambridge, University Press, [1901]
    Holding Institution: Smithsonian Libraries and Archives
  1. By: Crotch, George Robert,
    Type: Article
    In: Transactions of the American Entomological Society
    Volume: 5
    Date: 1874
    Page Range: 73--80
    Publication Info: Philadelphia, The Society, 1867-1877
  2. By: Crotch, George Robert,
    Type: Article
    In: Transactions of the Entomological Society of London
    Volume: 18
    Date: 1870
    Page Range: 41--52
    Publication Info: London, The Society,
  3. By: Crotch, George Robert,
    Type: Article
    In: Cistula entomologica
    Volume: 1
    Issue: 6
    Date: 1873
    Page Range: 141--150
    Publication Info: London, E. W. Janson,
  4. By: Crotch, George Robert,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 25
    Date: 1873
    Page Range: 19--83
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  5. By: Crotch, George Robert,
    Type: Article
    In: Cistula entomologica
    Volume: 1
    Issue: 5
    Date: 1872
    Page Range: 91--92
    Publication Info: London, E. W. Janson,
  6. By: Crotch, George Robert,
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 13
    Issue: 81
    Date: 1873
    Page Range: 75--87
    Publication Info: Philadelphia, American Philosophical Society,
  7. By: Crotch, George Robert,
    Type: Article
    In: Cistula entomologica
    Volume: 1
    Date: 1872
    Page Range: 59--71
    Publication Info: London, E. W. Janson,