Whitefly of the world : a systematic catalogue of the Aleyrodidae (Homoptera) with host plant and natural enemy data - British Museum (Natural History) (British Museum (Natural History) and Wiley, 1978)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1887)

Wild and cultivated plants poisonous to humans in Canada : a preliminary inventory - Mulligan, Gerald A., 1928 - (Research Branch, Agriculture Canada, 1984)

Wild medicinal plants of the United States - United States. Bureau of Plant Industry. (G.P.O, 1906)

Wild plants and their associated insects in the Palearctic region, primarily Europe and the Middle East - United States. Agricultural Research Service. (U.S. Dept. of Agriculture, Agricultural Research Service, 1999)

Wild plants of Canada : a flora, with descriptive key of families represented - Spotton, H. B. (Henry Byron), 1844 -1933 (Gage, 1929)

Wildland shrubs– their biology and utilization - Intermountain Forest; Range Experiment Station (Ogden, Utah) (Intermountain Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1972)

Wildland weeds - Florida Exotic Pest Plant Council. (Florida Exotic Pest Plant Council, 2000)

Wildland weeds - Florida Exotic Pest Plant Council. (Florida Exotic Pest Plant Council, 2003)

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

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

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

The Wilson journal of ornithology - Wilson Ornithological Society (Wilson Ornithological Society, 2006)

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

The Wilson journal of ornithology - Wilson Ornithological Society (Wilson Ornithological Society, 2010)

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

Winter botany - Trelease, William, 1857 -1945 (The author, 1918)

Winter botany, a companion volume to the author's Plant materials of decorative gardening - Trelease, William, 1857 -1945 (Trelease, 1918)

Winter botany, a companion volume to the author's Plant materials of decorative gardening - Trelease, William, 1857 -1945 (The author, 1918)

Die wirtwechselnden Rostpilze; Versuch einer Gesamtdarstellung ihrer biologischen Verha¨ltnisse - Klebahn, H. (Heinrich) (Gebrder Borntraeger, 1904)

Die wissenschaftliche Ausbildung des Apothekerlehrlings und seine Vorbereitung zum Gehülfenexamen : mit Rücksicht auf die neuesten Anforderungen - Schlickum, O. (Oscar), 1838 -1889 (Günther, 1884)

Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer "Valdivia" 1898-1899 - Chun, Carl, 1852 -1914 (G. Fischer, 1908)

Wissenschaftliche Ergebnisse der Deutschen Zentral-Africa-Expedition, 1907-1908 : unter Führung Adolf Friedrichs, Herzogs zu Mecklenburg - Friedrich, Adolf Duke of Mecklenburg-Schwerin, 1873 -1969 (Klinkhardt & Biermann, 1914)

Wissenschaftliche Ergebnisse der zweiten Deutschen Zentral-Afrika-Expedition, 1910-1911, unter Führung Adolf Friedrichs - Friedrich, Adolf Duke of Mecklenburg-Schwerin, 1873 -1969 (Klinkhardt & Biermann, 1917)

Wissenschaftliche Ergebnisse der zweiten Deutschen Zentral-Afrika-Expedition, 1910-1911, unter Führung Adolf Friedrichs - Friedrich, Adolf Duke of Mecklenburg-Schwerin, 1873 -1969 (Klinkhardt & Biermann, 1922)

Wissenschaftliche Mitteilungen aus Bosnien und Herzegovina (1899)

Wochenschrift des Vereines zur Beförderung des Gartenbaues in den Königlich Preussischen Staaten für Gärtnerei und Pflanzenkunde - Koch, Karl, 1809 -1879 (Wiegandt & Hempel [etc.], 1872)

Woody plants in winter; a manual of common trees and shrubs in winter in the Northeastern United States and southeastern Canada - Ammons, Nelle P. 1889 - (Boxwood Press, 1958)

The woody plants of Kentucky - Garman, Harrison, 1858 - (Kentucky Agricultural Experiment Station of the State University, 1913)

The woody plants of Manhattan in their winter condition - Hitchcock, A. S. (Albert Spear), 1865 -1935 (Mercury Pub. House, 1893)

Woody plants of the western national parks; containing keys for the identification of trees and shrubs - Bailey, Harold Edwards, 1906 - (University Press, 1949)

World Atlas of Biodiversity: earth's living resources in the 21st century - Groombridge, Brian (UNEP-WCMC, 2002)

The World List of Threatened Trees (1998)

World Plant Conservation Bibliography (1990)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1959)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1969)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1971)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1975)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1976)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1977)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1979)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1980)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1981)

xi an zhi wu zhi - Xie, Yintang, Wang Mali & Zhao Guifang (shan xi ke xue ji shu chu ban she, 2007)