North American birds - National Audubon Society. (American Birding Association in alliance with the National Audubon Society, 2013)

North American birds - National Audubon Society. (American Birding Association in alliance with the National Audubon Society, 2014)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1895)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1900)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1904)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1909)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1910)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1914)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1918)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1926)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1938)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1947)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1950)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1968)

North American fauna - U.S. Fish; Wildlife Service (Fish and Wildlife Service; for sale by the Supt. of Docs., U. S. Govt. Print. Off, 1981)

North American flora - New York Botanical Garden (New York Botanical Garden, 1915)

North American flora - New York Botanical Garden (New York Botanical Garden, 1919)

North American flora - New York Botanical Garden (New York Botanical Garden, 1907)

North American flora - New York Botanical Garden (New York Botanical Garden, 1911)

North American flora - New York Botanical Garden (New York Botanical Garden, 1924)

North American flora - New York Botanical Garden (New York Botanical Garden, 1921)

North American flora - New York Botanical Garden (New York Botanical Garden, 1934)

The North American species of Panicum - Chase, Agnes, 1869 -1963 (Govt. Print. Off, 1910)

The North American species of the genus ipomo͡ea - House, Homer D. (Homer Doliver), 1878 -1949 (1908)

The northern coasts of America and the Hudson's Bay territories - Ballantyne, R. M. (Robert Michael), 1825 -1894 (T. Nelson, 1854)

Notes on a collection of birds from Michoacan, Mexico - Blake, Emmet Reid, 1908 -1997 (1942)

Notes on Central American and Mexican coral snakes - Schmidt, Karl Patterson, 1890 -1957 (1936)

Notes on coral snakes from Mexico - Schmidt, Karl Patterson, 1890 -1957 (1943)

Notes on Mexican reptiles and amphibians - Smith, Hobart M. (Hobart Muir), 1912 -2013 (1939)

Notes on some mammals from Jalisco, Mexico - Genoways, Hugh H. (Museum, Texas Tech University, 1973)

Notizblatt des Königl. Botanischen Gartens und Museums zu Berlin - Engler, Adolf, 1844 -1930 (In Commission bei Wilhelm Engelmann, 1895)

Nouveau dictionnaire d'histoire naturelle, appliquée aux arts, à l'agriculture, à l'économie rurale et domestique, à la médecine, etc (Chez Deterville, 1819)

Nouvelles archives du Muséum d'histoire naturelle - Muséum national d'histoire naturelle (France) (Masson et Cie, 1871)

Nouvelles archives du Muséum d'histoire naturelle - Muséum national d'histoire naturelle (France) (Masson et Cie, 1905)

Nouvelles suites à Buffon (Roret, 1854)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1906)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1939)

Novon a journal of botanical nomenclature from the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden, 1992)

Novon a journal of botanical nomenclature from the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden, 1996)

Novon a journal of botanical nomenclature from the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden, 1998)

Novon a journal of botanical nomenclature from the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden, 2002)

Novon a journal of botanical nomenclature from the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden, 2003)

Novon a journal of botanical nomenclature from the Missouri Botanical Garden - Missouri Botanical Garden. (Missouri Botanical Garden, 2005)

The Nut-grower; devoted to the interests of the National Nut-growers' Association - National Nut-growers Association. (1902)

Observations on the Astacidae in the United States National Museum and in the Museum of Comparative Zoology, with descriptions of new species - Faxon, Walter, 1848 -1920 (Smithsonian Institution Press, 1898)

Occasional papers - Texas Tech University. Museum, (The Museum, 1972)

Occasional papers - Texas Tech University. Museum, (The Museum, 1980)

Occasional papers - Texas Tech University. Museum, (The Museum, 1982)

Occasional papers - Texas Tech University. Museum, (The Museum, 1987)

Occasional papers - Texas Tech University. Museum, (The Museum, 1991)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1890)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1922)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1928)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1982)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1983)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1984)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1993)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 2001)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1972)

Occasional papers of the Museum of Natural History, the University of Kansas - University of Kansas. Museum of Natural History. (The University, 1973)

Occasional papers on mollusks - Harvard University. Museum of Comparative Zoology. Department of Mollusks. (Dept. of Mollusks, 1975)

Official catalogue of exhibitors. Universal exposition. St. Louis, U.S.A. 1904. : Division of exhibits. Department A. Education [to H. Agriculture; J. Horticulture to P. Physical Culture; R. Livestock.] (For the Committee on press and publicity by the official catalogue company inc, 1904)

Öfversigt af Finska vetenskaps-societetens förhandlingar - Suomen Tiedeseura (s.n.], 1902)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1898)

On the batrachia and reptilia of Costa Rica : With notes on the herpetology and ichthyology of Nicaragua and Peru - Cope, E. D. (Edward Drinker), 1840 -1897 (s.n, 1875)

On the batrachia and reptilia of Costa Rica : With notes on the herpetology and ichthyology of Nicaragua and Peru / by E. D. Cope - Cope, E. D. (Edward Drinker), 1840 -1897 (s.n, 1875)

On the reptiles and Batrachians of North America - Garman, Samuel, 1843 -1927 (Major, Johnston & Barrett, Yeoman, 1883)

On the structure and development of the skull in the Batrachia - Royal Society (Great Britain) (Royal Society, 1881)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1895)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1897)