Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1991)

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, 1993)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1996)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1997)

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, 2008)

The wayside flowers of summer : a study of the conspicuous herbaceous plants blooming upon our norther roadsides during the months of July and August - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner, 1917)

The wayside flowers of summer; a study of the conspicuous herbaceous plants blooming upon our northern roadsides during the months of July and August - Keeler, Harriet L. (Harriet Louise), 1846 -1921 (C. Scribner's Sons, 1917)

The Weaver Gardens Company : season 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weaver Gardens Company, 1925)

"Weaver's" Flowerland "on the Cannon Ball" out where the flowers grow : wholesale–January, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.F. Weaver Nurseries and Greenhouses, 1936)

"Weaver's" Flowerland "on the Cannon Ball" out where the flowers grow : wholesale–March, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.F. Weaver Nurseries and Greenhouses, 1936)

The weed flora of Iowa ... - Pammel, L. H. (Louis Hermann), 1862 -1931 (Iowa Geological Survey, 1913)

The weed flora of Iowa - Pammel, L. H. (Louis Hermann), 1862 -1931 (Iowa Geological Survey, 1913)

Weeds of farm land - Brenchley, Winifred E. (Winifred Elsie), 1883 -1953 (Longmans, 1920)

Weeds of farm land - Brenchley, Winifred E. (Winifred Elsie), 1883 -1953 (Longmans, Green and co, 1920)

Weeds of Ontario - Ontario Agricultural College. (Dept. of Agriculture], 1916)

Weeds of southwestern Wisconsin and southeastern Minnesota - Pammel, L. H. (Louis Hermann), 1862 -1931 (Pioneer Press Co, 1887)

Weeds of the North Central States - University of Illinois at Urbana-Champaign. Agricultural Experiment Station. (University of Illinois at Urbana-Champaign, College of Agriculture, Agricultural Experiment Station, 1981)

Weeds used in medicine - Henkel, Alice, 1869 -1916 (U.S. G.P.O, 1917)

West Coast botany : an analytical key to the flora of the Pacific Coast in which are described over eighteen hundred species of flowering plants growing west of the Sierra Nevada and Cascade crests, from San Diego to Puget Sound - Rattan, Volney, 1840 -1915 (Whitaker & Ray, 1898)

West of England Journal of Science and Literature (1835)

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)

Wholesale–November, 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.F. Weaver Nurseries & Greenhouses, 1935)

Wholesale price list 1906-7 : ornamental trees, shrubs, herbaceous plants, climbing vines, native roses, ferns, etc - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Sackett Bros. Nurseries, 1907)

Wholesale price list, 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Profile Collecting Company, 1933)

Wholesale price-list : Burpee's garden, farm, and flower seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W. Atlee Burpee Co, 1897)

Wholesale price list : Burpee's garden, farm, and flower seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W. Atlee Burpee Co, 1896)

Wholesale price list : Burpee's garden, farm, and flower seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W. Atlee Burpee & Co, 1895)

Wholesale price list : Burpee's garden, farm, and flower seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W. Atlee Burpee & Co, 1898)

Wholesale price list, fall 1932 spring 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Profile Collecting Company, 1932)

Wholesale price list. for nurserymen, dealers, florists and landscape architects only. 1919 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bay State Nurseries, 1919)

Wholesale price list of collected native trees, shrubs, plants and bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.E. Williams Nursery Company, 1940)

Wholesale price list of collected native trees, shrubs, plants and bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.E. Williams Nursery Company, 1938)

Wholesale price list of collected native trees, shrubs, plants and bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.E. Williams Nursery Company, 1939)

Wholesale price list of collected native wild flowers, ferns, trees, shrubs, vines and native plant seed - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jos. R. Mumbauer & Son, 1920)

Wholesale price list of native trees, shrubs, plants and bulbs, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.E. Williams Nursery Company, 1941)

Wholesale price list, quality flower seeds for florists and nurserymen, 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Arthur Lee, 1935)

Wholesale trade list - Bay State Nurseries. (The Nurseries, 1919)

Wholesale trade list : fall 1924-spring 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weaver Gardens Company, 1924)

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

Wiener entomologische Zeitung (E. Reitter [etc.], 1922)

Wild flower seeds for sale : sow in October, November and early December - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Alice E. Hyde, 1936)

Wild flowers east of the Rockies - Reed, Chester A. (Chester Albert), 1876 -1912 (Reed, 1910)

Wild flowers east of the Rockies - Reed, Chester A. (Chester Albert), 1876 -1912 (Musson, 1910)

Wild flowers east of the Rockies - Reed, Chester A. (Chester Albert), 1876 -1912 (Doubleday, Page, 1910)

Wild flowers of Canada - Iles, George, 1852 -1942 (Montreal Star, 1895)

Wild flowers of the year (Religious Tract Society, 1800)

Wild flowers, perennials, rock plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Gunther Gardens, 1929)

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

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

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, 1936)

Wiltshire archaeological and natural history magazine - Wiltshire Archaeological; Natural History Society. (Wiltshire Archaeological and Natural History Society, 1958)

Wiltshire archaeological and natural history magazine - Wiltshire Archaeological; Natural History Society. (Wiltshire Archaeological and Natural History Society, 1968)

Wissenschaftliche Meersuntersuchungen. Abt. Helgoland - Biologische Anstalt Helgoland. (Lipsius und Tischer, 1900)

Wissenschaftliche Meersuntersuchungen. Abt. Helgoland - Biologische Anstalt Helgoland. (Lipsius und Tischer, 1902)

Wm. Elliott & Sons : 1893 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Elliott & Sons, 1893)

Wm. Elliott & Sons seedsmen : importers & growers of seeds and bulbs 1892 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wm. Elliott & Sons, 1892)

Woodruff's descriptive list of vegetable varieties - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Woodruff & Sons, 1944)

Woodruff's descriptive list of vegetable varieties - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.H. Woodruff & Sons, 1949)

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)

W.W. Rawson & Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1896)

W.W. Rawson & Co - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1897)

W.W. Rawson & Co. seedsmen - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1903)

W.W. Rawson & Co. seedsmen - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1904)

W.W. Rawson & Co. seedsmen - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1905)

W.W. Rawson & Co. seedsmen - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1906)

W.W. Rawson & Co. seedsmen : what our seeds will do for you - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.W. Rawson & Co, 1901)

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

xian dai hua fen ying yong yan jiu - Zhang, Jintan, Wang Pingli, Hao Haiping & Chen Songbo (ke xue chu ban she, 1990)

Yearbook - Botanical Society of the British Isles. (1949)

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

Yearbook of the United States Department of Agriculture - United States. Department of Agriculture. (G.P.O, 1895)

The Yellowstone National Park - Comstock, Theo. B. (Theodore Bryant), 1849 -1915 (1874)

The young gardener's assistant : containing a catalogue of garden & flower seeds, with practical directions under each head for the cultivation of culinary vegetables and flowers ; also directions for cultivating fruit trees, the grape vine, &c., to which is added a calendar, showing the work necessary to be done in the various departments of gardening in every month of the year - Bridgeman, Thomas, 1786 -1850 ([s.n.], 1840)

The young gardener's assistant; containing a catalogue of garden & flower seeds, with practical directions under each head, for the cultivation of culinary vegetables and flowers. Also directions for cultivating fruit trees, the grape vine, &c.; to which is added, a calendar, showing the work necessary to be done in the various departments of gardening in every month of the year ... - Bridgeman, Thomas, 1786 -1850 (Mitchell & Turner, 1837)

The young gardener's assistant; containing a catalogue of garden & flower seeds, with practical directions under each head, for the cultivation of culinary vegetables and flowers, also directions for cultivating fruit trees, the grape vine, & c.; to which is added, a calendar, showing the work necessary to be done in the various departments of gardening in every month of the year - Bridgeman, Thomas, 1786 -1850 (For sale by T. Bridgeman [etc.], 1840)

The young gardener's assistant: containing a catalogue of garden and flower seeds, with practical directions under each head, for the cultivation of culinary vegetables and flowers, with directions for cultivating fruit trees, the grape vine, &c - Bridgeman, Thomas, 1786 -1850 (W. Mitchell, 1835)

The young gardener's assistant, in three parts: containing catalogues of garden and flower seed, with practical directions under each head for the cultivation of culinary vegetables and flowers: also, directions for cultivating fruit trees, the grape vine, &c. To which is added, a calendar to each part: showing the work necessary to be done in the various departments each month of the year ... - Bridgeman, Thomas, 1786 -1850 (For sale by the author [etc.], 1844)

The young gardener's assistant, in three parts, containing catalogues of garden and flower seeds, with practical directions under each head for the cultivation of culinary vegetables and flowers; also, direction for cultivating fruit trees, the grape vine, &c., to which is added a calendar to each part: showing the work necessary to be done in the various departments each month of the year. The whole adapted to the climate of the United States - Bridgeman, Thomas, 1786 -1850 (The author, 1847)

The young gardener's assistant, in three parts, containing catalogues of garden and flower seed, with directions under each head for the cultivation of culinary vegetables and flowers - Bridgeman, Thomas, 1786 -1850 (The author, 1847)

The Young naturalist (1883)

yun nan zhi wu zhi - yun nan sheng zhi wu yan jiu suo (ke xue chu ban she, 1977)

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)

Zeitschrift des Mährischen Landesmuseums - Hucke, Karl. (Die Gesellschaft, 1913)

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

Zeitschrift für Entomologie - Verein für schlesische Insektenkunde zu Breslau. (In Commission bei I. Urban Kern, 1898)

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

Zeitschrift für Pflanzenkrankheiten (E. Ulmer, 1919)

Zeitschrift für wissenschaftliche Insektenbiologie (s.n, 1916)

Zeitschrift für wissenschaftliche Insektenbiologie (s.n, 1917)

zhong guo jin ji kun chong xue.zeng ding ban 中国经济昆虫学.增订版 - Li, Fengsun 李凤荪 (bian zhe zi kan 编者自刊, 1951)

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

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

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)

Zoe:a biological journal (Zoe Publishing Co, 1891)