Oesterreichische botanische Zeitschrift (A. Skofitz, 1906)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1908)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1909)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1910)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1911)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1912)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1914)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1916)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1918)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1919)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1920)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1921)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1923)

Oesterreichisches botanisches Wochenblatt ([L.W. Seidel], 1851)

Oesterreichisches botanisches Wochenblatt ([L.W. Seidel], 1853)

Oesterreichisches botanisches Wochenblatt ([L.W. Seidel], 1854)

Oesterreichisches botanisches Wochenblatt ([L.W. Seidel], 1855)

Oesterreichisches botanisches Wochenblatt ([L.W. Seidel], 1856)

Öfversigt af Finska vetenskaps-societetens förhandlingar - Suomen Tiedeseura (s.n.], 1905)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1848)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1850)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1896)

Olds' seeds : 1957, our 70th year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Company, 1957)

Olds' seeds, field, flower and garden : 1955, our 68th year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Company, 1955)

Olds' seeds, field, flower and garden seed : 1954, our 67th year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (L.L. Olds Seed Company, 1954)

Omnium stirpium sciagraphia et icones : quibus plantarum et radicum tum in hortis cultarum, tum in vrbium fossis & muris, pratis, aruis, montibus, collibus, nemoralibus, fluviis, riguis & littoralibus, villis & pagis, spontè provenientium, nomina, figura, natura, natales, synonyma, vsus & virtutes, docentur : cum doctissimorum scriptorum circa eas consensu & dissensu - Chabrey, Dominique, 1610 -1669 (Sumptibus Samuelis de Tournes, 1678)

On British wild flowers considered in relation to insects - Lubbock, John, Sir, 1834 -1913 (Macmillan, 1909)

On British wild flowers considered in relation to insects - Lubbock, John, Sir, 1834 -1913 (Macmillan, 1890)

On British wild flowers considered in relation to insects - Lubbock, John, Sir, 1834 -1913 (MacMillan, 1890)

On British wild flowers considered in relation to insects - Lubbock, John, Sir, 1834 -1913 (Macmillan, 1875)

On British wild flowers considered in relation to insects - Lubbock, John, Sir, 1834 -1913 (Macmillan and Co, 1875)

On molecular and microscopic science - Somerville, Mary Fairfax, 1780 -1872 (J. Murray, 1869)

On molecular and microscopic science - Somerville, Mary, 1780 -1872 (J. Murray, 1869)

On the popular names of British plants : being an explanation of the origin and meaning of the names of our indigenous and most commonly cultivated species - Prior, R. C. Alexander (Richard Chandler Alexander), 1809 -1902 (F. Norgate; [etc., etc.], 1879)

On the popular names of British plants, being an explanation of the origin and meaning of the names of our indigenous and most commonly cultivated species - Prior, R. C. Alexander (Richard Chandler Alexander), 1809 -1902 (Williams & Norgate, 1863)

On the popular names of British plants, being an explanation of the origin and meaning of the names of our indigenous and most commonly cultivated species - Prior, R. C. Alexander (Richard Chandler Alexander), 1809 -1902 (Williams and Norgate, 1870)

The Ontario natural science bulletin - Wellington Field Naturalists' Club. (Wellington Field Naturalists' Club, 1910)

The Ontario natural science bulletin - Wellington Field Naturalists' Club. (Wellington Field Naturalists' Club, 1905)

The Ontario natural science bulletin - Wellington Field Naturalists' Club. (Wellington Field Naturalists' Club, 1909)

Onze flora. Beschrijving van de familiën, voornamste geslachten en soorten der in Nederland in het wild groeiende, verwilderde, verbouwde en aangeplante gewassen, alsmede van eenige fraaie en nuttige midden-europeesche planten - Hoffmann, Carl, 1802 -1883 (W.J. Thieme, 1900)

Open-air studies in botany : sketches of British wild flowers in their homes - Praeger, R. Lloyd (Robert Lloyd), 1865 -1953 (Griffin, 1897)

The Orchadian - Australasian Native Orchid Society (The Society, 1986)

The orchid-grower's manual, containing brief descriptions of upwards of eight hundred species and varieties of orchidaceous plants; together with notices of their times of flowering, and most approved modes of treatment ... By Benjamin Samuel Williams - Williams, Benjamin Samuel, 1822 -1890 (Victoria and Paradise nurseries, 1871)

The orchid-grower's manual, containing descriptions of the best species and varieties of orchidaceous plants in cultivation ... - Williams, Benjamin Samuel, 1822 -1890 (Victoria and Paradise nurseries, 1894)

The orchid-grower's manual, containing descriptions of upwards of nine hundred and thirty species and varieties of orchidaceous plants; together with notices of their times of flowering, and most approved modes of treatment ... By Benjamin Samuel Williams - Williams, Benjamin Samuel, 1822 -1890 (Victoria and Paradise Nurseries, 1877)

The Orchid review (Orchid Review ltd.], 1893)

The Orchid review (Orchid Review ltd.], 1895)

The Orchid review (Orchid Review ltd.], 1898)

The Orchid review (Orchid Review ltd.], 1899)

The Orchid review (Orchid Review ltd.], 1903)

The Orchid review (Orchid Review ltd.], 1906)

The Orchid review (Orchid Review ltd.], 1908)

The Orchid review (Orchid Review ltd.], 1909)

The Orchid review (Orchid Review ltd.], 1910)

The Orchid review (Orchid Review ltd.], 1918)

The Orchid review (Orchid Review ltd.], 1919)

The Orchid review (Orchid Review ltd.], 1920)

The Orchid review (Orchid Review ltd.], 1921)

The Orchid review (Orchid Review ltd.], 1923)

The Orchid world. A monthly illustrated journal entirely devoted to orchidology - Wilson, Gurney, 1878 - (Alabaster, Passmore & Sons, ltd., printers], 1911)

The Orchid world. A monthly illustrated journal entirely devoted to orchidology - Wilson, Gurney, 1878 - (Alabaster, Passmore & Sons, ltd., printers], 1913)

Orchidaceae I - Szlachetko, Dariusz L (2004)

Orchidaceae II - Szlachetko, Dariusz L (Muséum national d'histoire naturelle, Département de systématique et évolution-USM 602, 2004)

Orchidaceae: illustrations and studies of the family Orchidaceae - Ames, Oakes, 1874 -1950 (Houghton, Mifflin, 1905)

Orchidaceae: illustrations and studies of the family Orchidaceae - Ames, Oakes, 1874 -1950 (Houghton, Mifflin, 1908)

Orchidaceae: illustrations and studies of the family Orchidaceae - Ames, Oakes, 1874 -1950 (Houghton, Mifflin, 1922)

Orchidacearum genera et species. Vol.1-[2, pars 1] - Kraenzlin, Fritz, 1847 -1934 (Mayer & Müller, 1901)

Orchidaceele din România - Pantu, Zacharia C., 1866 -1934 (Librariile Socec & co. [etc.], 1915)

Les orchidées : manuel de l'amateur - Bois, D. (Désiré), 1856 -1946 (J.-B. Baillière et fils, 1893)

Le orchidee - Pucci, Angiolo, 1851 - (U. Hoepli, 1905)

Die Orchideen :ihre Beschreibung, Kultur und Zu¨chtung. Handbuch fu¨r Orchideenliebhaber, Zu¨chter und Botaniker - Schlechter, Rudolf, 1872 -1925 (P. Parey, 1915)

Les orchidées exotiques et leur culture en Europe - Cogniaux, Alfred, 1841 -1916 (l'Auteur, 1894)

Orchidophile; journal des amateurs d'orchideés - Godefroy-Lebeuf, A. (Alexandre), 1844 -1903 (1881)

Orchidophile; journal des amateurs d'orchideés - Godefroy-Lebeuf, A. (Alexandre), 1844 -1903 (1884)