Wild flowers of the North American mountains - Henshaw, Julia W. (Julia Wilmotte) 1869 -1937 (R.M. McBride, 1915)

Wild flowers of the north-eastern states: being three hundred and eight individuals common to the north-eastern United States - Robertson-Miller, Ellen (G. P. Putnam's Sons, 1904)

Wild flowers of the north-eastern states; being three hundred and eight individuals common to the north-eastern United States - Robertson-Miller, Ellen (Putnam's, 1895)

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

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

Wilfred A. Brotherton's catalogue of Michigan wild flowers for 1891 : wild flowers for parks, flower gardens, rockeries, bogs, ornamental waters, carp ponds, bee-keepers, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wilfred A. Brotherton, 1891)

Wilmington flora : a list of plants growing about Wilmington, North Carolina, with date of flowering. With a map of New Hanover county - Wood, Thomas Fanning, 1841 -1892 (Edwards, Broughton & Co, 1886)

The Wilson bulletin - Agassiz Association. Wilson Ornithological Chapter. (Wilson Ornithological Society, 1986)

Window gardening, and a list of some of the flowers found growing naturally in the vicinity of Boston - Massachusetts Horticultural Society. Committee on Window Gardening. (Massachusetts Horticultural Society, 1889)

Die wirtswechselnden Rostpilze : Versuch einer Gesamtdarstellung ihrer biologischen Verhältnisse - Klebahn, H. (Heinrich) (Gebrüder Borntraeger, 1904)

With the flowers and trees in California - Saunders, Charles Francis, 1859 -1941 (McBride, Nast, 1914)

Wörter-buch worinnen derer kräuter nahmen, beyworte, und sonst gewöhnliche redens-arten aus dem lateinischen ins teutsche übertragen sind; nebst einer kurtzen beschreibung von denen geschlectern und ordnungen derer kräuter - Probst, Johann Ernst, (Gedruckt bey August Samuel Crucigern, 1747)

Wochenschrift des Vereines zur Beförderung des Gartenbaues in den Königlich Preussischen Staaten für Gärtnerei und Pflanzenkunde - Koch, Karl, 1809 -1879 (Wiegandt & Hempel [etc.], 1870)

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)

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The works of John Fothergill, M.D. Member Of The Royal College Of Physicians, And Fellow Of The Royal Society, Of London; Fellow Of The Royal College Of Physicians In Edinburgh; And Corresponding Member Of The Royal Medical Society Of Paris, And Of The American Philosophical Society At Philadelphia. With some account of his life - Lettsom, John Coakley, 1744 -1815 (printed for Charles Dilly, in the Poultry, 1784)

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

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xin jiang zong he kao cha bao gao:1956 nian 新疆综合考察报告:1956年 - Zhongguo ke xue yuan. Xinjiang zong ge kao cha dui 中国科学院新疆综合考察队 (ke xue chu ban she 科学出版社, 1958)

A year in the fields; selections from the writings of John Burroughs - Burroughs, John, 1837 -1921 (Houghton Mifflin, 1897)

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A year in the fields; selections from the writings of John Burroughs - Burroughs, John, 1837 -1921 (Houghton, Mifflin, 1901)

Yearbook of agriculture - United States. Department of Agriculture. (U.S. Govt. Print. Off, 1896)

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Zeitschrift für Botanik (1921)

Zeitschrift für Pflanzenkrankheiten (E. Ulmer, 1891)

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Zentralblatt für Physiologie - Physiologische Gesellschaft zu Berlin. (F. Deuticke, 1910)

Zentralblatt für Physiologie - Physiologische Gesellschaft zu Berlin. (F. Deuticke, 1913)

Zentralblatt für Physiologie - Physiologische Gesellschaft zu Berlin. (F. Deuticke, 1915)

Zentralblatt für Physiologie - Physiologische Gesellschaft zu Berlin. (F. Deuticke, 1918)

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 jing ji zhi wu bing yuan mu lu - Dai, Fanglan, Xiang Wangnian & Zheng Ruyong (ke xue chu ban she, 1958)

zhong guo sha mo zhi wu zhi - Liu, Yingxin (ke xue chu ban she, 1992)

zhong guo tan yang qu zhi wu zhi - Xu, Yangpeng & Wang Kezhi (ning xia ren min chu ban she, 1988)

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

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

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

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

Zoography; or, The beauties of nature displayed. In select descriptions from the animal, and vegetable, with additions from the mineral kingdom. Systematical arranged - Daniell, William, 1769 -1837 (Printed for Cadell and Davies, 1807)

The Zoological record - Zoological Society of London. (J.V. Voorst, 1920)

Zoologisches Centralblatt (W. Engelmann, 1900)

zou xiang 21 shi ji de zhong guo sheng tai xue zhong guo sheng tai xue hui di wu jie quan guo hui yuan dai biao da hui-ji xue shu tao lun hui lun wen ji - Zhongguo sheng tai xue hui (zhong guo sheng tai xue hui, 1995)

Zur Flora von Domingo-Haiti - Palacký, Jan, 1830 -1908 (1896)

Zur Fortpflanzungsgeschichte der gesammten Vögel. Text - Thienemann, Friedrich August Ludwig, 1793 -1858 (1856)