The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1951)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1952)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1957)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1960)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1963)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1965)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1966)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1967)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1969)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1971)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1972)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1973)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1974)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1975)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1976)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1978)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1980)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1981)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1982)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1983)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1984)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1990)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1991)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1992)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1993)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1994)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1996)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1997)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1998)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1999)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 2000)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 2002)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 2003)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 2004)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 2005)

The Wilson journal of ornithology - Wilson Ornithological Society (Wilson Ornithological Society, 2007)

The Wilson journal of ornithology - Wilson Ornithological Society (Wilson Ornithological Society, 2008)

The Wilson journal of ornithology - Wilson Ornithological Society (Wilson Ornithological Society, 2009)

The Wilson journal of ornithology - Wilson Ornithological Society (Wilson Ornithological Society, 2012)

The Wilson quarterly - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Chapter of the Agassiz Association, 1892)

Wilson's American ornithology with additions including the birds described by Audubon, Bonaparte, Nuttall, & Richardson - Wilson, Alexander, 1766 -1813 (C.L. Cornish, 1839)

Wilson's American ornithology : with notes by Jardine ; to which is added a synopsis of American birds, including those described by Bonaparte, Audubon, Nuttall, and Richardson - Brewer, T. M. (Thomas Mayo), 1814 -1880 (Otis, Broaders, and Co, 1840)

Wilson's American ornithology, with notes by Jardine. To which is added a synopsis of American birds, including those described by Bonaparte, Audubon, Nuttall, and Richardson, by T.M. Brewer - Brewer, T. M. (Thomas Mayo), 1814 -1880 (T.L. Magagnos, 1854)

Winter sunshine - Burroughs, John, 1837 -1921 (Houghton, Mifflin, 1917)

Die Wirkungen von Arzneimitteln und Giften auf das Auge : Handbuch für die gesammte ärztliche Praxis - Royal College of Physicians of Edinburgh. (Hirschwald, 1905)

Die wissenschaftlichen Ergebnisse der Vega-Expedition - Nordenskiöld, A. E. (Adolf Erik), 1832 -1901 (Brockhaus, 1883)

Wonders of the animal kingdom Birds - Society for Promoting Christian Knowledge (Great Britain). General Literature Committee. (Society for Promoting Christian Knowledge, 1848)

Wood notes wild, notations of bird music - Cheney, John Vance, 1848 -1922 (Lee and Shepard, 1892)

Works, containing his physiology, nosology, and the first lines of the practice of physic; with numerous extracts from his manuscript papers, and from his treatise of the materia medica - Cullen, William, 1710 -1790 (Blackwood, 1827)

The world book, organized knowledge in story and picture - O'Shea, Michael Vincent, 1866 - (Quarrie, 1920)

World Checklist of Threatened Birds (1993)

World Checklist of Threatened Birds (1990)

The world's birds a simple and popular classification of the birds of the world - Finn, Frank, 1868 -1932 (Hutchinson & co, 1908)

Wörterbuch der biologie. Von dr. Heinrich Schmidt - Schmidt, Heinrich, 1874 -1935 (A. Kröner, 1912)

Wörterbücher der Naturgeschichte : in der deutschen, holländischen, dänischen, schwedischen, englischen, französischen, italienischen, Spanischen und Portugisischen Sprache - Nemnich, Philipp Andreas, 1764 -1822 (Adam Friedrich Böhme, 1798)

The writings of John Burroughs - Burroughs, John, 1837 -1921 (Houghton, Mifflin, & co, 1895)

The writings of John Burroughs - Burroughs, John, 1837 -1921 (Houghton, Mifflin, & co, 1879)

The writings of John Burroughs - Burroughs, John, 1837 -1921 (Houghton, Mifflin, & co, 1905)

The writings of John Burroughs - Burroughs, John, 1837 -1921 (Houghton, Mifflin, & co, 1913)

The writings of John Burroughs. [v.1-20 - Burroughs, John, 1837 -1921 (Houghton, Mifflin and Co, 1904)

A year with the birds - Flagg, Wilson, 1805 -1884 (Educational Publishing Company, 1889)

A year with the birds - Flagg, Wilson, 1805 -1884 (Educational Publishing Company, 1890)

A year with the birds; or, The birds and seasons of New England - Flagg, Wilson, 1805 -1884 (Educational publishing co, 1889)

A year with the birds; or, The birds and seasons of New England - Flagg, Wilson, 1805 -1884 (Estes and Lauriat, 1881)

Yearbook of agriculture - United States. Department of Agriculture. (U.S. Govt. Print. Off, 1895)

Yearbook of agriculture - United States. Department of Agriculture. (U.S. Govt. Print. Off, 1904)

Yearbook of agriculture - United States. Department of Agriculture. (U.S. Govt. Print. Off, 1906)