Nova Guinea : résultats de l'expédition scientifique néerlandaise à la Nouvelle-Guinée ... - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (E.J. Brill, 1907)

Nova Guinea : résultats de l'expédition scientifique néerlandaise à la Nouvelle-Guinée ... - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (E.J. Brill, 1912)

Observations of a naturalist in the Pacific between 1896 and 1899 - Guppy, H. B. (Henry Brougham), 1854 -1926 (1903-06, 1906)

Observations of a naturalist in the Pacific between 1896 and 1899 - Guppy, H. B. (Henry Brougham), 1854 -1926 (Macmillan and Co, 1903)

Observations of a naturalist in the Pacific between 1896 and 1899 - Guppy, H. B. (Henry Brougham), 1854 -1926 (Macmillan and co., limited, 1903)

Occasional papers of the Museum of Zoology, University of Michigan - University of Michigan. Museum of Zoology. (University of Michigan, 1918)

Oesterreichische botanische Zeitschrift (A. Skofitz, 1894)

The Orchadian - Australasian Native Orchid Society (The Society, 1978)

The Orchadian - Australasian Native Orchid Society (The Society, 1982)

The Orchadian - Australasian Native Orchid Society (The Society, 2002)

The Orchadian - Australasian Native Orchid Society (The Society, 2009)

The Orchadian - Australasian Native Orchid Society (The Society, 2018)

Orchard and garden (J.T. Lovett, 1889)

Orchid album :comprising coloured figures and descriptions of new, rare and beautiful orchidaceous plants (B. S. Williams, 1888)

Orchid album :comprising coloured figures and descriptions of new, rare and beautiful orchidaceous plants (B. S. Williams, 1889)

Orchid album :comprising coloured figures and descriptions of new, rare and beautiful orchidaceous plants (B. S. Williams, 1891)

Orchid album :comprising coloured figures and descriptions of new, rare and beautiful orchidaceous plants (B. S. Williams, 1897)

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)