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  1. Die Avifauna von Timor,
    By: Hellmayr, C. E. - Haniel, C. B.
    Publication info: Stuttgart :Im Kommissionsverlag der E. Schweizerbartschen Verlags Buchhandlung,1914.
    Contributed by: University of Illinois Urbana Champaign
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  2. The birds of the Rio Madeira.
    By: Hellmayr, C. E.
    Publication info: London,Novitates Zoologicae,1910.
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  3. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. by Charles E. Hellmayr. part 7. Corvidae - Paridae - Sittidae - Certhidae - Chamaeidae - Cinclidae - Troglodytidae - Prunellidae - Mimidae - Turdidae - Zeledoniidae - Sylviidae /
    By: Hellmayr, C. E.
    Publication info: Chicago :Field Museum of Natural History,1934.
    Contributed by: University of Illinois Urbana Champaign
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  4. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. Charles E. Hellmayr, Boardman Conover. part 1, no. 3. Jacanidae - Rostratulidae - Haematopodidae - Charadridae - Scolopacidae - Recurvirostridae - Phalaropodidae - Burhinidae - Thinocoridae - Chionididae - Stercoraridae - Laridae - Rynchopidae - Alcidae
    By: Hellmayr, C. E. - Conover, Boardman,
    Publication info: Chicago :Field Museum of Natural History,1948.
    Contributed by: University of Illinois Urbana Champaign
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  5. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. by Charles E. Hellmayr. part 8. Alaudidae - Hirundinidae - Motacilillidae - Bombycillidae - Ptilogonatidae - Dulidae - Vireonidae - Vireolanidae - Cyclarhidae - Lanidae - Sturnidae - Coerebidae - Compsothlypidae /
    By: Hellmayr, C. E.
    Publication info: Chicago :Field Museum of Natural History,1935.
    Contributed by: University of Illinois Urbana Champaign
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  6. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. initiated by Charles B. Cory, continued by Charles E. Hellmayr. part 5. Tyrannidae /
    By: Cory, Charles B. - Hellmayr, C. E.
    Publication info: Chicago :Field Museum of Natural History,1927.
    Contributed by: University of Illinois Urbana Champaign
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  7. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. by Charles E. Hellmayr. part 9. Tersinidae - Thraupidae /
    By: Hellmayr, C. E.
    Publication info: Chicago :Field Museum of Natural History,1936.
    Contributed by: University of Illinois Urbana Champaign
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  8. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. Charles E. Hellmayr, Boardman Conover. part 1, no. 2. Spheniscidae - Gaviidae - Colymbidae - Diomedeidae - Procellariidae - Hydrobatidae - Pelecanoididae - Phaethontidae - Pelecanidae - Sulidae - Phalacrocoracidae - Anthingidae - Fregatidae - Ardeidae -
    By: Hellmayr, C. E. - Conover, Boardman,
    Publication info: Chicago :Field Museum of Natural History,1948.
    Contributed by: University of Illinois Urbana Champaign
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  9. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. including all species and subspecies known to occur in North America, Mexico, Central America, South America, the West Indies, and islands of the Caribbean Sea, the Galapagos Archipelago, and other is by Charles E. Hellmayr and Boardman Conover. part 2, no. 1. Family Bubonide, Family Todidae, Family Tytonidae, Momotide, Family Psittacidae, Family Nyctibiidae, Family Steatornithidae, Family Caprimulgidae, Family Alcedinidae, Family Cypselidae :
    By: Hellmayr, C. E. - Conover, Boardman,
    Publication info: Chicago :Field Museum of Natural History,1918.
    Contributed by: University of Illinois Urbana Champaign
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  10. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. by Charles E. Hellmayr. part 6. Oxyruncidae - Pipridae - Cotingidae - Rupicolidae - Phytotomidae /
    By: Hellmayr, C. E.
    Publication info: Chicago :Field Museum of Natural History,1929.
    Contributed by: University of Illinois Urbana Champaign
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  11. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. by Charles E. Hellmayr. part 11. Ploceidae -- Catamblyrhynchidae -- Fringilidae /
    By: Hellmayr, C. E.
    Publication info: Chicago :Field Museum of Natural History,1938.
    Contributed by: University of Illinois Urbana Champaign
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  12. Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. by Charles E. Hellmayr and Boardman Conover. part 1, no. 4. Cathartidae - Accipitridae -- Pandionidae -- Falconidae /
    By: Hellmayr, C. E. - Conover, Boardman,
    Publication info: Chicago :Field Museum of Natural History,1949.
    Contributed by: University of Illinois Urbana Champaign
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  13. Critical notes on the types of little-known species of neotropical birds. Part II. By C.E. Hellmayr.
    By: Hellmayr, C. E.
    Publication info: London,1913
    Contributed by: University of California Libraries (archive.org)
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  14. Paridae, Sittidae und Certhiidae, bearbeitet von C. E. Hellmayr ... Mit 76 abbildungen.
    By: Hellmayr, C. E.
    Publication info: Berlin,R. Friedländer und Sohn,1903.
    Contributed by: MBLWHOI Library, Woods Hole
    BHL Collections: MBLWHOI Library, Woods Hole
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  15. Zoologie von Timor : Ergebnisse der unter Leitung von Joh. Wanner im Jahre 1911 ausgeführten Timor-Expedition : nach eigenen Sammlungen unter Mitwirkung von Fachgenossen / hearausgegeben von C.B. Haniel.
    By: Frizzi, Ernst. - Haniel, C. B. - Hellmayr, C. E. - Schwarz, Ernst. - Wanner, Joh.
    Publication info: Stuttgart :Im Kommissionsverlag der E. Schweizerbartschen Verlags Buchhandlung,1914.
    Contributed by: American Museum of Natural History Library
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