Vorträge über botanische Stammesgeschichte, gehalten an der Reichsuniversität zu Leiden. Ein Lehrbuch der Pflanzensystematik - Lotsy, Johannes Paulus, 1867 -1931 (G. Fischer, 1911)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1950)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1978)

Webbia - Webb, Philip Barker, 1793 -1854 (Istituto botanico dell'Università di Firenze, 1905)

wei guan shu zhi wu jian ding shou ce 维管束植物鉴定手册 - Lin, Ying 林英 (jiang xi xin hua yin shua chang yin shua 江西新华印刷厂印 刷, 1979)

The West-American scientist - Orcutt, Charles Russell, 1864 -1929 (C.R. Orcutt, 1887)

The West-American scientist - Orcutt, Charles Russell, 1864 -1929 (C.R. Orcutt, 1900)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1891)

The wild flowers of California : their names, haunts, and habits / by Mary Elizabeth Parsons ; illustrations by Margaret Warriner Buck - Parsons, Mary Elizabeth (Cunningham, Curtiss & Welch, 1907)

Wild, free-roaming burros : status of present knowledge - United States. Bureau of Land Management. (U.S. Dept. of the Interior, Bureau of Land Management, 1977)

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

Woodhawk botanical survey, Fergus County, Montana, Lewistown District of the Bureau of Land Management - United States. Bureau of Land Management. (Montana Natural Heritage Program, 1997)

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

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1968)

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

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

A Yosemite flora; a descriptive account of the ferns and flowering plants, including the trees, of the Yosemite National Park; with simple keys for their identification ... - Hall, Carlotta Case. (Elder, 1912)

you hua zhi wu ke zhi shuang zi ye zhi wu - Hutchinson, J. (John) 1884 -1972 (shang wu yin shu guan)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 2006)

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zhong guo zhong zi zhi wu fen ke jian suo biao - Geng, Yi Li (ke xue chu ban she, 1958)

zhong guo zhong zi zhi wu fen lei xue - zheng mian (shang hai ke xue ji shu chu ban she, 1959)

zhong guo zhong zi zhi wu fen lei xue - zheng mian (xin ya shu dian chu ban, 1954)

zhong zi zhi wu fen lei xue jiang yi - Hu. Xianxiao (zhong hua shu ju chu ban, 1954)

zhong zi zhi wu ming cheng - Zhongguo ke xue yuan bian yi ju (zhong guo ke xue yuan, 1954)