The wonder of life - Thomson, J. Arthur (John Arthur), 1861 -1933 (A. Melrose, 1914)

The wonder of life - Thomson, J. Arthur (John Arthur), 1861 -1933 (A. Melrose, Ltd, 1915)

The wonder of life - Thomson, J. Arthur (John Arthur), 1861 -1933 (Henry Holt & co, 1914)

Woodpeckers in relation to trees and wood products - McAtee, W. L. (Waldo Lee) 1883 -1962 (U.S. Dept. of Agriculture, Biological Survey, 1911)

The woods of the United States - Sargent, Charles Sprague, 1841 -1927 (D. Appleton and company, 1885)

The woods of the United States - Sargent, Charles Sprague, 1841 -1927 (D. Appleton and Co, 1885)

The woods of the United States : with an account of their structure, qualities and uses ; with geographical and other notes upon the trees which produce them - Sargent, Charles Sprague, 1841 -1927 (Appleton, 1885)

World treasures from Flowerland - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Paul J. Howard's Horticultural Establishment, 1935)

World treasures from Flowerland : 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Paul J. Howard's Horticultural Establishment, 1937)

Year book - Carnegie Institution of Washington - Carnegie Institution of Washington (Carnegie Institution of Washington, 1911)

Year book - Carnegie Institution of Washington - Carnegie Institution of Washington (Carnegie Institution of Washington, 1913)

Year book - Carnegie Institution of Washington - Carnegie Institution of Washington (Carnegie Institution of Washington, 1918)

Year book - Carnegie Institution of Washington - Carnegie Institution of Washington (Carnegie Institution of Washington, 1919)

Year book - Carnegie Institution of Washington - Carnegie Institution of Washington (Carnegie Institution of Washington, 1921)

The Yellowstone National Park - Comstock, Theo. B. (Theodore Bryant), 1849 -1915 (1874)

Zeitschrift für Pflanzenzüchtung - Bayerischer Saatzuchtverein. (Paul Parey, 1915)

Zeitschrift für Pflanzenkrankheiten (E. Ulmer, 1891)

Zentralblatt für Zoologie, allgemeine und experimentelle Biologie (B.G. Teubner, 1918)

Zoe:a biological journal (Zoe Publishing Co, 1890)

Zoe:a biological journal (Zoe Publishing Co, 1891)

Zoe:a biological journal (Zoe Publishing Co, 1892)

Zoe:a biological journal (Zoe Publishing Co, 1893)

Zoe:a biological journal (Zoe Publishing Co, 1894)

Zoological Society bulletin - New York Zoological Society. (New York Zoological Society, 1916)

Der Zoologische Garten - International Union of Directors of Zoological Gardens (G. Fischer, Zoologische gesellschaft, 1886)

Zoologischer Jahresbericht - Stazione zoologica di Napoli. (R. Friedlander, 1881)