The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1876)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1901)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1902)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1909)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1915)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1911)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1913)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1918)

The Auk - American Ornithologists' Union. (American Ornithologists' Union, etc, 1919)

Austral avian record; a scientific journal devoted primarily to the study of the Australian avifauna - Mathews, Gregory M 1876 -1949 (Witherby, 1918)

Austral avian record; a scientific journal devoted primarily to the study of the Australian avifauna - Mathews, Gregory M 1876 -1949 (Witherby, 1915)

Austral avian record; a scientific journal devoted primarily to the study of the Australian avifauna - Mathews, Gregory M 1876 -1949 (Witherby, 1922)

Austral avian record; a scientific journal devoted primarily to the study of the Australian avifauna - Mathews, Gregory M 1876 -1949 (Witherby, 1920)

Aves Hungariae : enumeratio systematica avium Hungariæ cum notis brevibus biologicis, locis inventionis virorumque a quibus oriuntur - Frivaldszky, János, 1822 -1895 (Typis Societatis Frankli, 1891)

The Avicultural magazine - Avicultural Society. (Avicultural Society, etc, 1918)

The Avicultural magazine - Avicultural Society. (Avicultural Society, etc, 1984)

The Avicultural magazine - Avicultural Society. (Avicultural Society, etc, 1985)

Avifauna der provinz Schlesien. Lft. 1-2 - Floericke, Kurt, 1869 -1934 (Universitäts-Buchdruckerei (C.L. Pfeil), 1892)

Avifauna italica. Elenco delle specie di uccelli stazionarie o di passaggio in Italia, colla loro sinonimia volgare e con notizie più specialmente intorno alle migrazioni ed alla nidificazione - Giglioli, Enrico Hillyer, 1845 -1909 (Coi tipi dei successori Le Monnier, 1886)

Avifauna italica : nuovo elenco sistematico delle specie di uccelli stazionarie, di passaggio o di accidentale comparsa in Italia - Giglioli, Enrico Hillyer, 1845 -1909 (Ufficino ornitologico, 1907)

Bailey, V. O., Arizona, Mexico, July 1889 - November 1889 - Bailey, Vernon, 1864 -1942 (1889)

Bailey, V. O., California, North Dakota, September 1907 - December 1907 - Bailey, Vernon, 1864 -1942 (1907)

Bailey, V. O., Illinois, Minnesota, Nebraska, Wyoming, March 1890 - June 1890 - Bailey, Vernon, 1864 -1942 (1890)

Der Bau der Vögel - Marshall, William, 1845 -1907 (J.J. Weber, 1895)

Beiträge zur Vogelfauna der Mark Brandenburg. Materialen zu einer Ornithologie der norddeutschen Tiefebene auf Grund eigener Beobachtungen und darauf gegründeter Studien - Schalow, Herman, 1852 -1925 (Deutsche ornithologische Gesellschaft, 1919)

Bericht des Naturwissenschaftlichen Vereins für Schwaben und Neuburg (a.V.) in Augsburg - Naturwissenschaftlicher Verein für Schwaben und Neuburg. (Die Verein, 1890)

Bericht über die Leistungen in der Naturgeschichte der Vögel - Pelzeln, August von, 1825 -1891 (1847)

Bericht über die Leistungen in der Naturgeschichte der Vögel - Pelzeln, August von, 1825 -1891 (1884)

Berichte des "Vereins Schlesischer Ornithologen" - Verein Schlesischer Ornithologen. (Der Verein, 1906)

Bibliographia zoologica - Concilium Bibliographicum. (Wilhelm Engelmann, 1909)

Bibliographia zoologica - Concilium Bibliographicum. (Wilhelm Engelmann, 1910)

Bibliographia zoologica - Concilium Bibliographicum. (Wilhelm Engelmann, 1911)

Bibliotheca zoologica [I] Verzeichniss der schriften ©ơber zoologie, welche in den periodischen werken enthalten und vom jahre 1846-1860 selbst©Þndig erschienen sind. Mit einschluss der allgemein-naturgeschichtlichen, periodischen und paleontologischen schriften - Carus, Julius Victor, 1823 -1903 (W. Engelmann, 1861)

Bibliotheca zoologica [I] Verzeichniss der Schriften über zoologie, welche in den Periodischen werken enthalten und vom Jahre 1846-1860 selbständig erschienen Sind - Carus, Julius Victor, 1823 -1903 (W. Engelmann, 1861)

Bibliotheca zoologica II. verzeichness der schriften über zoologie welche in den periodischen werken enthalten und vom jahre 1861-1880 selbständig erschienen sind, mit einschluss der allgemein-naturgeschichtlichen, periodischen und paleontologischen schriften - Carus, Julius Victor, 1823 -1903 (Wilhelm Engelmann, 1887)

Bihang till Kongl. Svenska vetenskaps-akademiens handlingar - Kungl. Svenska vetenskapsakademien. (K. Svenska vetenskaps-akademien, 1872)

Bilder-Atlas zur wissenschaftlich-populären Naturgeschichte der Wirbelthiere - Fitzinger, Leopold Joseph, 1802 -1884 (Kaiserl. Koenigl. Hof- und Staatsdr, 1867)

Binomial and trinomial index to The auk, 1884-1940, also including the Nuttall bulletin, 1876-1883, and the A.O.U. check-list of North American birds (all seven editions) - Pollock, Andrew W. ([Andrew W. Pollock III], 2015)

La biodiversidad en Guanajuato: estudio de Estado - Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO) (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2012)

La biodiversidad en Michoacán: estudio de estado - Leal Nares, Oscar Adrián (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2005)

La biodiversidad en Michoacán estudio de estado 2 - Cruz Angón, Andrea (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2019)

Biologia centrali-americana: Aves - Godman, Frederick Du Cane, 1834 -1919 (R.H. Porter], 1888)

Biologia centrali-americana: Aves - Godman, Frederick Du Cane, 1834 -1919 (R.H. Porter], 1897)

Biologia Centrali-Americana :zoology, botany and archaeology - Godman, Frederick Du Cane, 1834 -1919 (Published for the editors by R. H. Porter], 1888)

Biologia Centrali-Americana :zoology, botany and archaeology - Godman, Frederick Du Cane, 1834 -1919 (Published for the editors by R. H. Porter], 1897)

Biological investigation in Alaska and Yukon territory : I. East Central Alaska. II. The Ogilvie range, Yukon. III. The Macmillan River, Yukon - Osgood, Wilfred Hudson, 1875 -1947 (Government Printing Office, 1909)

A biological investigation of the Athabaska-Mackenzie region - Merriam, C. Hart (Clinton Hart), 1855 -1942 (Govt. print. off, 1908)

A biological investigation of the Hudson Bay region - Merriam, C. Hart (Clinton Hart), 1855 -1942 (Govt. Print. Off, 1902)

Biological review of Ontario (Biological Society of Ontario, 1894)

A biological survey of Colorado - United States. Bureau of Biological Survey. (Government Printing Office, 1911)

Biologisches Centralblatt - Rosenthal, I. (Isidor), 1836 -1915 (Verlag von Georg Thieme, 1895)

The biologist's handbook of pronunciations - Jaeger, Edmund C. (Edmund Carroll) 1887 -1983 (Thomas, 1960)

Birch Creek National Wild River, Alaska : resource values and instream flow recommendations - United States. Bureau of Land Management. (U.S. Department of the Interior, Bureau of Land Management, Alaska State Office, 1998)

The bird book, illustrating in natural colors more than seven hundred North American birds, also several hundred photographs of their nests and eggs - Reed, Chester A. (Chester Albert), 1876 -1912 (C. K. Reed, 1914)

Bird guide. Part 2, Land birds east of the Rockies - Reed, Chester A. (Chester Albert), 1876 -1912 (Musson Book Co, 1909)

Bird guide. pt. 2, Land birds east of the Rockies, from parrots to bluebirds - Reed, Chester A. (Chester Albert), 1876 -1912 (C. K. Reed, 1909)

Bird guide : land birds east of the Rockies from parrots to bluebirds - Reed, Chester A. (Chester Albert), 1876 -1912 (Doubleday, Page, 1916)

Bird guide : land birds east of the Rockies from Parrots to Bluebirds - Reed, Chester A. (Chester Albert), 1876 -1912 (Doubleday, Page, and Co, 1926)

Bird guide, part 2 : land birds east of the Rockies, from parrots to bluebirds - Reed, Chester A. (Chester Albert), 1876 -1912 (Chas. K. Reed, 1912)

Bird guide...east of the Rockies - Reed, Chester A. (Chester Albert), 1876 -1912 (Doubleday, Page & Co, 1910)

Bird lore - National Association of Audubon Societies for the Protection of Wild Birds; Animals. (Macmillan Co, 1916)

Bird-lore - National Association of Audubon Societies for the Protection of Wild Birds; Animals. (National Association of Audubon Societies, 1916)

Bird studies; an account of the land birds of eastern North America - Scott, William Earl Dodge, 1852 -1910 (G. P. Putnam's Sons, 1898)

Birds & nature magazine - Higley, William Kerr, 1860 -1908 (nature study publishing company [etc.], 1896)

Birds and mammals of the Skeena River region of northern British Columbia - Swarth, Harry S. (Harry Schelwald), 1878 -1935 (University of California Press, 1924)

Birds and mammals of the Stikine River region of northern British Columbia and southeastern Alaska - Swarth, Harry S. (Harry Schelwald), 1878 -1935 (University of California Press, 1922)

Birds - Baird, Spencer Fullerton, 1823 -1887 (1858)

Birds : illustrated by color photography : a monthly serial (Nature Study Publishing Co, 1898)

Birds in Kansas - Thompson, Max C. (University of Kansas, Museum of Natural History, 1989)

Birds; a miscellaneous collection of 37 pamphlets about birds - Biological Society of Washington (1910-1913, 1914)

The birds of Albany County; a catalogue of the species recorded in this vicinity with notes on their lives and habits, and brief field-marks for aid in identification - Judd, Wilbur Webster. ([Press of Brandow printing co.], 1907)

Birds of Algonquin Provincial Park, Ontario - Royal Ontario Museum of Zoology. (s.n.], 1938)

Birds of America - Pearson, T. Gilbert (Thomas Gilbert), 1873 -1943 (The University Society, 1923)

The birds of Amherst and vicinity, including nearly the whole of Hampshire county, Massachusetts - Clark, Hubert Lyman, 1870 -1947 (Press of Carpenter & Morehouse, 1906)

The birds of Canada : with descriptions of their habits, food, nests, eggs, times of arrival and departure - Ross, Alexander Milton, 1832 -1897 (Rowsell, 1872)

The birds of Canada : with descriptions of their habits, food, nests, eggs, times of arrival and departure - Ross, Alexander Milton, 1832 -1897 (Henry Rowsell, 1871)

The birds of Colorado - Cooke, Wells W. (Wells Woodbridge), 1858 -1916 (State Agricultural College, Agricultural Experiment Station, 1897)

The birds of east Pennsylvania and New Jersey - Turnbull, William Paterson, 1830 -1871 (H. Grambo & Co, 1869)

Birds of eastern Canada - Taverner, P. A. (Percy Algernon), 1875 -1947 (J. de L. Taché, Printer, 1919)

Birds of eastern Canada - Taverner, P. A. (Percy Algernon), 1875 -1947 (Acland, 1922)

Birds of eastern Canada - Taverner, P. A. (Percy Algernon), 1875 -1947 (F. A. Acland, 1922)

Birds of eastern Canada - Taverner, P. A. (Percy Algernon), 1875 -1947 (J. de L. Tachprinter, 1919)

Birds of eastern North America - Reed, Chester A. (Chester Albert), 1876 -1912 (Doubleday, Page & Company, 1912)

The birds of eastern North America - Maynard, C. J. (Charles Johnson), 1845 -1929 (Maynard, 1881)

The birds of eastern North America : known to occur east of the ninetieth meridian - Cory, Charles B. (Charles Barney), 1857 -1921 (Field Columbian Museum, 1899)

The birds of eastern North America known to occur east of the ninetieth meridian - Field Museum of Natural History. (Bay State Pub. Co, 1900)

The birds of eastern North America known to occur east of the ninetieth meridian - Field Columbian Museum. (Printed for the Field Columbian Museum [by A. Mudge], 1899)

The birds of eastern North America : with original descriptions of all the species which occur east of the Mississippi River, between the Arctic circle and the Gulf of Mexico, with full notes upon their habits, etc - Maynard, C. J. (Charles Johnson), 1845 -1929 (C.J. Maynard & co, 1896)

The birds of eastern North America : with original descriptions of all the species which occur east of the Mississippi River, between the Arctic circle and the Gulf of Mexico, with full notes upon their habits, etc - Maynard, C. J. (Charles Johnson), 1845 -1929 (C.J. Maynard & Co, 1872)

The birds of eastern Pennsylvania and New Jersey, with introductory chapters on geographical distribution and migration - Stone, Witmer. 1866 -1939 (Delaware Valley Ornithological Club, 1894)

The birds of Essex County, Massachusetts - Townsend, Charles Wendell, 1859 -1934 (The Club, 1905)

The birds of Illinois and Wisconsin - Cory, Charles B. (Charles Barney), 1857 -1921 (Field Museum of Natural History, 1909)

The birds of Illinois and Wisconsin - Cory, Charles B. (Charles Barney), 1857 -1921 (1909)