1949 orchids - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.W. Curson, 1949)

1950 orchids - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.W. Curson, 1950)

1951 orchids - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.W. Curson, 1951)

1953 orchids - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (N.W. Curson, 1953)

1997 IUCN red list of threatened plants (1997)

Års-berättelse om botaniska arbeten och upptäckter ... - Kungl. Svenska vetenskapsakademien. (Tryckt hos P.A. Norstedt & söner, 1836)

Års-berättelse om botaniska arbeten och upptäckter ... - Kungl. Svenska vetenskapsakademien. (Tryckt hos P.A. Norstedt & söner, 1837)

Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin - Deutsche Akademie der Wissenschaften zu Berlin. (Realschul-Buchhandlung, 1822)

Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin - Deutsche Akademie der Wissenschaften zu Berlin. (Realschul-Buchhandlung, 1849)

About orchids; a chat - Boyle, Frederick, 1841 -1914 (Chapman and Hall, 1893)

Acta Botánica Mexicana - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2006)

Acta Botánica Mexicana - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2012)

Acta Botánica Mexicana - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2013)

Actes du Congrés international de botanique tenu a Paris en août 1867, sous les auspices de la Société botanique de France - Fournier, Eugène, 1834 -1884 (G. Bailliére, 1867)

Addisonia : colored illustrations and popular descriptions of plants - New York Botanical Garden (New York Botanical Garden, 1916)

Addisonia : colored illustrations and popular descriptions of plants - New York Botanical Garden (New York Botanical Garden, 1917)

Addisonia : colored illustrations and popular descriptions of plants - New York Botanical Garden (New York Botanical Garden, 1918)

Addisonia : colored illustrations and popular descriptions of plants - New York Botanical Garden (New York Botanical Garden, 1919)

Addisonia : colored illustrations and popular descriptions of plants - New York Botanical Garden (New York Botanical Garden, 1920)

Agricultural bulletin of the Straits and Federated Malay States. New series (Gov. Print. Off, 1908)

Agricultural bulletin of the Straits and Federated Malay States. New series (Gov. Print. Off, 1901)

Album da Secção de Botanica do Museu Paulista e suas dependencias, etc - Hoehne, F. C. (Frederico Carlos), 1882 -1959 (1925)

Allgemeine botanische Zeitschrift für Systematik, Floristik, Pflanzengeographie etc - Kneucker, Johann Andreas, 1862 -1946 (J.J. Reiff, 1914)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1833)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1834)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1835)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1836)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1837)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1838)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1839)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1840)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1841)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1842)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1843)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1846)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1847)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1848)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1849)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1850)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1851)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1852)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1853)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1854)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1855)

Allgemeine Gartenzeitung - Otto, Friedrich, 1783 -1856 (1856)

Allgemeine naturgeschichte, als Philosophische und Humanitätswissenschaft für Naturforscher, Philosophen und das Hoher gebildete Publikum - Perty, Maximilian, 1804 -1884 (C. Fischer, 1846)

Allgemeine Zeitschrift für Entomologie Organ der "Allgemeinen Entomologischen Gesellschaft" ; Internationales Organ für die Interessen der allgemeinen und angewandten Entomologie wie der Insekten-Biologie - Allgemeine Entomologische Gesellschaft. (Druck und Verlag von J. Neumann, 1902)

The amateur orchid cultivators' guide book - Burberry, H. A. (Blake & Mackenzie, 1894)

Amateur orchid cultivators' guide book - Burberry, H. A. (Blake and Mackensie, 1899)

The amateur orchid cultivators' guide book - Burberry, H. A. (Blake & Mackenzie, 1900)

L'Amazonie brésilienne : le pays, ses habitants, ses ressources, notes et statistiques jusqu'en 1920 - Le Cointe, Paul, 1870 -1956 (A. Challamel, 1922)

American agriculturist (Orange Judd Co., Publishers [etc.], 1866)

American agriculturist, for the farm, garden and household (Orange Judd Co, 1866)

The American florist : a weekly journal for the trade - American Florists Company. (American Florist Company, 1886)

The American florist : a weekly journal for the trade - American Florists Company. (American Florist Company, 1888)

The American florist : a weekly journal for the trade - American Florists Company. (American Florist Company, 1890)

The American florist : a weekly journal for the trade - American Florists Company. (American Florist Company, 1891)

The American florist : a weekly journal for the trade - American Florists Company. (American Florist Company, 1986)

The American florist : a weekly journal for the trade - American Florists Company. (American Florist Company, 1909)

The American florist : a weekly journal for the trade - American Florists Company. (American Florist Company, 1912)

The American florist : a weekly journal for the trade - American Florists Company. (American Florist Company, 1913)

American flower-garden directory... - Buist, Robert, 1805 -1880 (1851)

American flower-garden directory... - Buist, Robert, 1805 -1880 (1852)

American flower-garden directory : containing practical directions for the culture of plants in the flower-garden, hot-house, green-house, rooms, or parlour windows ... - Buist, Robert, 1805 -1880 (Orange Judd, 1854)

American flower-garden directory : containing practical directions for the culture of plants in the flower-garden, hot-house, green-house, rooms, or parlour windows ... (Orange Judd, 1854)

American flower-garden directory: containing practical directions for the culture of plants in the flower-garden, hot-house, green-house, rooms, or parlor windows, for every month in the year - Buist, Robert, 1805 -1880 (A. Hart, late Carey and Hart, 1851)

The American garden (Beach, Son & Co, 1891)

American homes and gardens (Munn and Co, 1907)

American homes and gardens (Munn and Co, 1909)

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (Constable and Co, 1905)

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (Holt, 1904)

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and Company, 1905)

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and Company, 1908)

American insects - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (Holt, 1914)

American journal of pharmacy - Philadelphia College Of Pharmacy (Philadelphia College of Pharmacy, 1909)

American journal of pharmacy - Philadelphia College Of Pharmacy (Philadelphia College of Pharmacy, 1835)

The American journal of science and arts - Silliman, Benjamin, 1779 -1864 (S. Converse, 1865)

The American journal of science and arts - Silliman, Benjamin, 1779 -1864 (S. Converse, 1866)

The American naturalist - American Society of Naturalists. (Published for the American Society of Naturalists by the University of Chicago Press [etc.], 1909)

Anales científicos paraguayos - Bertoni, Moisés S. (1901)

Anales de la Sociedad Científica Argentina - Sociedad Científica Argentina ([Sociedad Científica Argentina], 1920)

Anales de la Sociedad Española de Historia Natural - Sociedad Española de Historia Natural. (La Sociedad, 1892)

Anales del Ministerio de Fomento de la República Mexicana - Mexico. Ministerio de Fomento. (Imprenta de Francisco DÃaz de LeÃ³n, 1898)

Anales del Museo Nacional de Historia Natural de Buenos Aires - Museo Nacional de Historia Natural de Buenos Aires. (Impr. y Casa Editora "Juan A. Alsina", 1911)

Analyse des familles des plantes, avec l'indication des principaux genres qui s'y rattachent - Du Mortier, B.-C. (Barthélemy-Charles), 1797 -1878 (Impr. de J. Casterman, Aîne, 1829)

Animal behaviour - Morgan, C. Lloyd (Conwy Lloyd), 1852 -1936 (Arnold, 1920)

Animal behaviour - Morgan, C. Lloyd (Conwy Lloyd), 1852 -1936 (E. Arnold, 1900)