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  1. 1
    A monograph of the Genus Polyphylla Harris in America north of Mexico (Coleoptera: Scarabaeidae: Melolonthinae) /
    由 Young, Ronald M
    出版 1988

    图书
  2. 2
    Nereis Boreali-Americana: or, Contributions to a history of the marine algæ of North America. /

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    图书
  3. 3
    Flora telluriana, etc

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    图书
  4. 4
    Revision of chalcid wasps of genus Eurytoma in America north of Mexico
    由 Bugbee, Robert E
    出版 1967

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    图书
  5. 5
    Arthropods of medical importance in America north of Mexico : by B. V. Travis, Helen H. Lee [and] Renato M. Labadan

    图书
  6. 6
    North American industry classification system (NAICS)
    出版 1990

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    图书
  7. 7
    Classification of the Coleoptera of North America Prepared for the Smithsonian institution

    图书
  8. 8
    Longevity records of North American birds /

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    Government Document Reference Material
  9. 9
    The geographical distribution of color and of other variable characters in the genus Junco: a new aspect of specific and subspecific values

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    Book Chapter
  10. 10
    On a Botrychium new to American flora and its relationship with B. lunaria and B. simplex /

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    图书
  11. 11
    Nomenclatorial notes on certain North American mammals

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    Book Chapter
  12. 12
    A catalog of the Coleoptera of America north of Mexico : Family: Curculionidae, subfamily: Polydrosinae, tribe: Tanymecini /
    由 Howden, Anne T
    出版 1993

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    Government Document 图书
  13. 13
    On certain North American species of Zonites, etc. /

    图书
  14. 14
    A revision of the subfamily Criocerinae (Chrysomelidae) of North America north of Mexico /
    由 White, Richard E
    出版 1993

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    Government Document 图书
  15. 15
    A catalog of the Coleoptera of America north of Mexico family : Cupesidae /
    由 Atkins, Michael D
    出版 1979

    Government Document 图书
  16. 16
    How to know the mammals : pictured-keys for determining to species, all of the mammals of the United States and southern Canada with maps showing their geographic distribution, and many pages of helps for their successful study /

    图书
  17. 17
    A revision of the Nearctic species of the genus Elachista s.l
    由 Kaila, Lauri
    出版 1999

    图书
  18. 18
    Slime-mold beetles of the genus Agathidium Panzer in North and Central America : Coleoptera, Leiodidae

    图书
  19. 19
    North American cave millipeds II, an unusual new species (Dorypetalidae) from Southern California, and new records of Speodesmus tuganbius (Trichopolydesmidae) from New Mexico /

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    图书
  20. 20
    Freshwater triclads (Turbellaria) of North America IV. : The polypharyngeal species of Phagocata /
    由 Kenk, Roman, 1898-1988
    出版 1970

    Government Document 图书
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