The University of Kansas science bulletin - University of Kansas. Museum of Natural History. (University of Kansas, 1928)

The valley naturalist - Skaer, Henry, (Henry Skaer, 1878)

Variation in animals and plants - Vernon, Horace Middleton, 1870 - (H. Holt, 1903)

Variation in animals and plants - Vernon, Horace Middleton, 1870 - (H. Holt and company, 1902)

Vertebrates of Ontario - Nash, Charles W. (Charles William), 1848 -1926 (Print. by order of the Legislative Assembly of Ontario by L.K. Cameron, 1908)

Vertebrates of Ontario - Nash, Charles W. (Charles William), 1848 -1926 (L.K. Cameron, 1908)

Vertebrates of Ontario - Nash, Charles W. (Charles William), 1848 -1926 (L. K. Cameron, 1908)

Virginia journal of science - Virginia Academy of Science. (Virginia Academy of Science, Dept. of Physics and Geophysical Science, School of Sciences and Health Professions, Old Dominion University, 1969)

Virginia journal of science - Virginia Academy of Science. (Virginia Academy of Science, Dept. of Physics and Geophysical Science, School of Sciences and Health Professions, Old Dominion University, 2015)

Visitors' guide to the local collection of birds in the American Museum of Natural History, New York City : with an annotated list of the birds known to occur within fifty miles of New York City - American Museum of Natural History (Printed for the Museum, 1894)

Die Vögel; Handbuch der systematischen Ornithologie - Reichenow, Anton, 1847 -1941 (F. Enke, 1914)

Die Vögel der zoologischen Gärten : Leitfaden zum Studium der Ornithologie mit besonderer Berücksichtigung der in Gefangenschaft gehaltenen Vögel : ein Handbuch für Vogelwirthe - Reichenow, Anton, 1847 -1941 (L.A. Kittler, 1882)

De vogels van Guyana (Suriname, Cayenne en Demerara) - Penard, Arthur Philip (E.P. Penard, 1910)

Voyage of the 'Albatross' to the Gulf of California in 1911 - Townsend, Charles Haskins, 1859 -1944 (1916)

Wake-robin - Burroughs, John, 1837 -1921 (Houghton Mifflin Co, 1913)

Wake-robin - Burroughs, John, 1837 -1921 (Houghton, Mifflin, 1899)

Wake-Robin - Burroughs, John, 1837 -1921 (Houghton, Mifflin, 1899)

The Warbler (Mayflower Pub. Co, 1905)

The Warbler (Mayflower Pub. Co, 1906)

The warblers of New England - Maynard, C. J. (Charles Johnson), 1845 -1929 (C. J. Maynard, 1905)

The warblers of North America - Chapman, Frank M. (Frank Michler), 1864 -1945 (D. Appleton & Company, 1907)

The warblers of North America - Chapman, Frank M. (Frank Michler), 1864 -1945 (D. Appleton, 1914)

The warblers of North America - Chapman, Frank M. (Frank Michler), 1864 -1945 (D. Appleton, 1917)

The warblers of North America - Chapman, Frank M. (Frank Michler), 1864 -1945 (D. Appleton, 1907)

Western birds - California Field Ornithologists. (California Field Ornithologists, 1974)

Western birds - California Field Ornithologists. (California Field Ornithologists, 1976)

Western birds - California Field Ornithologists. (California Field Ornithologists, 1980)

Western birds - California Field Ornithologists. (California Field Ornithologists, 1997)

Western birds - California Field Ornithologists. (California Field Ornithologists, 2001)

Western birds - California Field Ornithologists. (California Field Ornithologists, 2012)

Western birds - California Field Ornithologists. (California Field Ornithologists, 2013)

Western birds - California Field Ornithologists. (California Field Ornithologists, 2014)

Western birds - California Field Ornithologists. (California Field Ornithologists, 2015)

Western birds - Myers, Harriet Williams. (The Macmillan company, 1922)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1895)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1897)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1901)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1902)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1903)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1905)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1906)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1907)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1910)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1912)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1913)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1915)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1917)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1921)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1922)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1923)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1925)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1927)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1930)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1933)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1935)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1936)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1940)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1943)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1944)

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

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1954)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1955)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1956)

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, 1961)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1970)

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

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1977)