West African forests and forestry - Unwin, Arthur Harold, 1878 - (T. F. Unwin, ltd, 1920)

Westafrikanische Kautschuk-Expedition - Schlechter, Rudolf, 1872 -1925 (Verlag des Kolonial-Wirtschaftlichen Komitees, 1900)

Westafrikanische Kautschuk-Expedition - Schlechter, Rudolf, 1872 -1925 (Verlag des Kolonial-Wirtschaftlichen Komitees, 1899)

What I saw in the tropics; a record of visits to Ceylon, the Federated Malay states, Mexico, Nicaragua, Costa Rica, republic of Panama, Colombia, Jamaica, Hawaii - Pearson, Henry C. (Henry Clemens), 1858 -1936 (The Indian rubber publishing co, 1906)

What I saw in the tropics; a record of visits to Ceylon, the Federaed Malay states, Mexico, Nicaragua, Costa Rica, republic of Panama, Columbia, Jamaica, Hawaii - Pearson, Henry C. (Henry Clemens), 1858 -1936 (The India Rubber Publishing Co, 1906)

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)

The whole art of rubber-growing - Wicherley, William (West Strand Pub. Co, 1911)

The whole art of rubber-growing - Wicherley, William (The West Strand Publishing Co., ltd, 1911)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1897)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1898)

Wiener illustrirte Garten-Zeitung - Kaiserlich-Königliche Gartenbau-Gesellschaft in Wien. (W. Frick, 1899)

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

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1885)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1886)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1887)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1888)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1890)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1891)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1892)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1893)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1894)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1899)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1904)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1911)

[William Bull (Firm) materials] - Liberty Hyde Bailey Hortorium. Ethel Z. Bailey Horticultural Catalogue Collection. (1895)

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)

The wonderland of the Eastern Congo; the region of the snow-crowned volcanoes, the pygmies, the giant gorilla, and the okapi - Barns, Thomas Alexander, 1880 - (G. P. Putnam's Sons, 1922)

World Atlas of Great Apes and their Conservation - Caldecott, Julian Oliver (University of California Press, 2005)

The world's commercial products : a descriptive account of the economic plants of the world and of their commercial uses - Freeman, William George, 1874 - (Morang, 1907)

The world's commercial products a descriptive account of the economic plants of the world and of their commercial uses - Freeman, William George, 1874 - (Morang, 1907)

The world's commercial products; a descriptive account of the economic plants of the world and of their commercial uses - Wilson, Ernest Henry, 1876 -1930 (Sir I. Pitman and sons, limited, 1907)

Wörterbuch der biologie. Von dr. Heinrich Schmidt - Schmidt, Heinrich, 1874 -1935 (A. Kröner, 1912)

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

Zambezia : a general description of the valley of the Zambezi River, from its delta to the River Aroangwa, with its history, agriculture, flora, fauna, and ethnography - Maugham, R. C. F. (Reginald Charles Fulke), 1866 -1956 (J. Murray, 1910)

Zeitschrift für Naturwissenschaften - Naturwissenschaftlicher Verein für Sachsen und Thüringen in Halle. (Verlag Naturwissenschaftlichen Vereins für Sachsen und Thüringen, 1896)

Zeitschrift für Pflanzenkrankheiten (E. Ulmer, 1891)

Zentralblatt für Zoologie, allgemeine und experimentelle Biologie (B.G. Teubner, 1915)

Les zoocécidies des plantes d'Afrique, d'Asie et d'Océanie : description des galles, illustration, bibliographie détaillée, répartition géographique, index bibliographique - Houard, C. (Clodomir), 1873 -1943 (J. Hermann, 1922)

The Zoologist : a monthly journal of natural history (1894)