Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1975)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1977)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1976)

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

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1980)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1984)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1986)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1989)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1990)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1992)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2000)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2002)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2006)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2008)

Wayside and woodland blossoms; a pocket guide to British wild flowers for the country rambler - Step, Edward, 1855 -1931 (Warne, 1895)

Wayside and woodland ferns; a pocket guide to the British ferns, horsetails and clubmosses - Step, Edward, 1855 -1931 (Warne, 1922)

The West-American scientist - Orcutt, Charles Russell, 1864 -1929 (C.R. Orcutt, 1890)

Western naturalist - Renfrew Natural History Society. (Renfrew Natural History Society, 1972)

Western naturalist - Renfrew Natural History Society. (Renfrew Natural History Society, 1974)

Where to find ferns : with a special chapter on The ferns round London - Heath, Francis George, 1843 -1913 (Society for Promoting Christian Knowledge, 1885)

Wholesale trade list : fall 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Plumfield Nurseries, 1934)

Wholesale trade list : fall of 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gillett's Fern and Flower Farm, 1929)

Wholesale trade list for nurserymen, florists and dealers : February 10, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Plumfield Nurseries, 1934)

Wholesale trade list of collected native trees, shrubs and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perkiomen Gardens, 1926)

Wholesale trade list : spring of 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gillett's Fern and Flower Farm, 1929)

Wild flowers, ferns, rhododendrons, kalmias, azaleas and other items that can be successfully planted in the fall : fall supplement, 1937 listing - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gillett Fern and Flower Farm, 1937)

Wild native flowering plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Three Laurels, 1958)

Wild native flowering plants of Western North Carolina : ornamental shrubs and trees, evergreens, perennials, ferns and vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Three Laurels, 1949)

Wild native flowering plants of Western North Carolina : ornamental shrubs and trees, evergreens, perennials, ferns and vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Three Laurels, 1948)

Wild native flowering plants : ornamental shrubs and trees, evergreens, perennials, ferns and vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Three Laurels, 1957)

Wild native flowering plants : ornamental shrubs and trees, evergreens, perennials, ferns and vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Three Laurels, 1954)

Wild native flowering plants : ornamental shrubs and trees, evergreens, perennials, ferns and vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Three Laurels, 1953)

Wild native flowering plants : ornamental shrubs and trees, evergreens, perennials, ferns and vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Three Laurels, 1950)

Wild native flowering plants : ornamental shrubs and trees, evergreens, perennials, ferns and vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Three Laurels, 1951)

Wild native flowering plants : ornamental shrubs and trees, evergreens, perennials, ferns and vines - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Three Laurels, 1952)

Wildwood ways - Packard, Winthrop, 1862 -1943 (Small, Maynard and Company, 1909)

William Baldwin and John Torrey correspondence, 1816-1818 - Bonpland, Aimé, 1773 -1858 (1815)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1868)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1867)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1870)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1871)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1869)

Wiltshire archaeological and natural history magazine - Wiltshire Archaeological; Natural History Society. (Wiltshire Archaeological and Natural History Society, 1971)

Wiltshire archaeological and natural history magazine - Wiltshire Archaeological; Natural History Society. (Wiltshire Archaeological and Natural History Society, 2008)

Wissenschaftliche Mitteilungen aus Bosnien und Herzegovina (1897)

Wissenschaftliche Mitteilungen aus Bosnien und Herzegovina (1899)

Wissenschaftliche Mitteilungen aus Bosnien und Herzegovina (1907)

With boat and gun in the Yangtze valley. With special chapters by valued contributors - Wade, Henling Thomas ([Shanghai Mercury], 1910)

A world of green hills; observations of nature and human nature in the Blue Ridge - Torrey, Bradford, 1843 -1912 (Houghton, Mifflin and company, 1898)

A world of green hills; observations of nature and human nature in the Blue Ridge - Torrey, Bradford, 1843 -1912 (Houghton, Mifflin, 1898)

Wörterbücher der Naturgeschichte : in der deutschen, holländischen, dänischen, schwedischen, englischen, französischen, italienischen, Spanischen und Portugisischen Sprache - Nemnich, Philipp Andreas, 1764 -1822 (Adam Friedrich Böhme, 1798)

Yearbook - Botanical Society of the British Isles. (1953)

The Young naturalist (1880)

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

Zeitschrift des Mährischen Landesmuseums - Hucke, Karl. (Die Gesellschaft, 1916)

Zeitschrift für Botanik (1912)

Zeitschrift für die gesammten Naturwissenschaft - Naturwissenschaftlicher Verein für Sachsen und Thüringen in Halle. (Wiegandt, Hempel & Parey, 1857)

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

Zeitschrift für die gesammten Naturwissenschaft - Naturwissenschaftlicher Verein für Sachsen und Thüringen in Halle. (Wiegandt, Hempel & Parey, 1865)

Zeitschrift für Entomologie - Verein für schlesische Insektenkunde zu Breslau. (In Commission bei I. Urban Kern, 1874)

Zeitschrift für Naturwissenschaften - Naturwissenschaftlicher Verein für Sachsen und Thüringen in Halle. (Verlag Naturwissenschaftlichen Vereins für Sachsen und Thüringen, 1904)

Zeitschrift für Naturwissenschaften - Naturwissenschaftlicher Verein für Sachsen und Thüringen in Halle. (Verlag Naturwissenschaftlichen Vereins für Sachsen und Thüringen, 1905)

Zeitschrift für Pflanzenkrankheiten (E. Ulmer, 1891)

Zentralblatt für Physiologie - Physiologische Gesellschaft zu Berlin. (F. Deuticke, 1911)

zhe jiang tian mu shan yao yong zhi wu zhi 浙江天目山药用植物志 - Zhejiang ren min chu ban she 浙江人民出版社 (zhe jiang ren min chu ban she chu ban浙江人民出版社出版, 1965)

zhong guo yu yao zhi wu tu shuo jue lei zhi wu men - Fu, Shuxia (ke xue chu ban she, 1957)

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)

Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere (G. Fischer, 1898)

Известия на Царските природонаучни институти в София = Izvestiia na Tsarskitia prirodonauchni instituti v Sofiia - Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria) (Pechatnitsa P. Glushkov, 1932)

Известия на Царските природонаучни институти в София = Izvestiia na Tsarskitia prirodonauchni instituti v Sofiia - Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria) (Pechatnitsa P. Glushkov, 1938)