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)

Wild flowers of the British Isles - Adams, H. Isabel. (London Book Co. Ltd, 1910)

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

Wild Plants in Trade (1992)

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

Wildflowers and landscapes of Ecuador : the way we knew it - Missouri Botanical Garden. Library. (Missouri Botanical Garden, 2014)

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

Wildland weeds - Florida Exotic Pest Plant Council. (Florida Exotic Pest Plant Council, 2006)

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

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, 1922)

Wissenschaftliche Mitteilungen aus Bosnien und Herzegovina (1904)

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

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

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)

xin jiang sheng wu duo yang xing - Yuan, Guoying (xin jiang ke xue ji shu chu ban she, 2008)

XVIth AETFAT Congress (August 28 - September 2, 2000) : Abstracts XVIième Congrès de l'AETFAT : Résumés - Robbrecht, Elmar (NBGB, 2000)

yao yong zhi wu xue 药用植物学 - quan guo zhong deng wei sheng xue xiao shi yong jiao cai yao yong zhi wu xue bian xie zu 全国中等卫生学校 试用教材药用植物学 编写组 (si chuan ren min chu ban she 四川人民出版社, 1979)

yao yong zuo wu zhai pei ji shu zi liao - Zhong, Jian (nong ye chu ban she, 1959)

Yi chuan zi yuan bao hu yu li yi gong xiang - Huang, Hongwen (Zhongguo lin ye chu ban she, 2006)

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 - Zhongguo ke xue yuan. Kunming zhi wu yan jiu suo (ke xue chu ban she, 1983)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 2005)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 2002)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 2000)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 1991)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 1997)

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

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 2003)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 1995)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 2004)

Yunnan zhong zi zhi wu ming lu - Zhongguo ke xue yuan. Kunming zhi wu yan jiu suo. (Yunnan ren min chu ban she, 1984)

zai pei zhi wu ming lu - Zhongguo ke xue yuan. Zhi wu yan jiu suo (zhong guo ke xue yuan)

Zapiski Imperatorskoĭ akademīi nauk, po Fiziko-matematicheskomu otdielenīiu. 8e série = Mémoires de lʹAcadémie impériale des sciences de St.-Pétersbourg, Classe physico-mathématique. 8e série - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia). Fiziko-matematicheskoe otdielenīe. (Prodaetsia u Kommissionerov Imperatorskoi Akademiia Nauk, 1914)

Zeitschrift für Botanik (1918)

Zeitschrift für die gesammten Naturwissenschaft - Naturwissenschaftlicher Verein für Sachsen und Thüringen in Halle. (Wiegandt, Hempel & Parey, 1860)

Zeitschrift für Naturwissenschaften - Naturwissenschaftlicher Verein für Sachsen und Thüringen in Halle. (Verlag Naturwissenschaftlichen Vereins für Sachsen und Thüringen, 1887)

zhi wu fen lei xue jian bian - Hu, Xiansu (gao deng jiao yu chu ban she)

zhong guo dong bei zhi wu jian suo biao - dong bei nong lin xue yuan zhi wu jiao yan zu he bian (dong bei nong lin xue yuan zhi wu jiao yan zu)

zhong guo sha chong zhi wu zhi 中国杀虫植物志 - Jiang, Chuanyi 姜传义 (xin jiang ke ji wei sheng chu ban she ( K )新疆科技卫生出版社(K), 2000)

zhong guo zhi wu ke shu jian suo biao - Zhongguo zhi wu yan jiu suo bian (zhong guo ke xue yuan zhi wu yan jiu suo, 1953)

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 (xin ya shu dian chu ban, 1954)

zhong guo zhong zi zhi wu ke shu ci dian - Hou, Kuanzhao 侯宽昭 (ke xue chu ban she, 1982)

zhong yao nong lin wai lai ru qin wu zhong de sheng wu xue yu kong zhi - Zheng, Xiaobo. (ke xue chu ban she, 2005)

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)

Zhongguo yao yong zhi wu zhi 中国药用植物志 - Pei, Jian 裴鑑 (zhong guo ke xue yuan zhi wu yan jiu suo中国科学院植物研究所)

zhu xi zhi wu zhi - Gan, Qiliang (hu bei chang jiang chu ban ji tuan hu bei ke xue ji shu chu ban she, 2005)

Zoologica (Erwin Nägele, 1911)