Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1901)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1894)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1910)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1931)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1957)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1967)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1833)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1851)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1853)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1870)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1899)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1906)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1845)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1846)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1848)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1873)

Proserpina ; also, Ariadne florentina ; The opening of the Crystal Palace ; St. Mark's rest ; Lectures on art ; The elements of perspective - Ruskin, John, 1819 -1900 (Aldine Book Pub, 1890)

Quality cattleya seedlings : special list. no. 40 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fred A. Stewart, Inc, 1958)

Quality orchids at present day prices - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Armacost & Royston, Inc, 1934)

Quality orchids : since 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (George E. Baldwin, Inc, 1956)

Quality orchids : since 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (George E. Baldwin, Inc, 1955)

Quality orchids : since 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (George E. Baldwin, Inc, 1954)

Quality plants, bulbs, seeds : wholesale list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Nurserymen's Exchange, 1947)

Quarterly Journal of Science, Literature and the Arts - Royal Institution of Great Britain. (1821)

The Quarterly journal of the Geological Society of London - Geological Society of America. (1920)

Queensland Agricultural Journal - Queensland. Department of Agriculture; Stock. (Queensland Dept. of Primary Industries, 1912)

Queensland Agricultural Journal - Queensland. Department of Agriculture; Stock. (Queensland Dept. of Primary Industries, 1919)

Rapport de la Commission d'Exploration du plateau central du Bresil - Cruls, L. (1894)

Records of the Australian Museum - Australian Museum (Printed by order of the Trustees, 1926)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1903)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1904)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1914)

Reflections on the phenomenon of rejuvenescence in nature, especially in the life and development of plants - Braun, Alexander, 1805 -1877 (1851)

Refugium botanicum : or figures and descriptions from living specimens, of little known or new plants of botanical interest - Baker, John Gilbert, 1834 -1920 (J. van Voorst, 1870)

Reichenbachia :Orchids illustrated and described - Sander, F. 1847 -1920 (F. Sander & Co., Orchid growers & importers;H. Sotheran & Co.;I. Forstermann, [etc., etc.], 1888)

Reichenbachia :Orchids illustrated and described - Sander, F. 1847 -1920 (F. Sander & Co., Orchid growers & importers;H. Sotheran & Co.;I. Forstermann, [etc., etc.], 1890)

Reichenbachia :orchids illustrated and described - Sander, F. 1847 -1920 (F. Sander, 1892)

Reise der österreichischen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen des Commodore B. von Wüllerstorf-Urbair - Österreichische Akademie der Wissenschaften. (Kaiserlich-Königliche Hof- und Staatsdruckerei; in Commission bei K. Gerold's Sohn, 1866)

Reise der österreichischen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen des Commodore B. von Wüllerstorf-Urbair - Österreichische Akademie der Wissenschaften. (Kaiserlich-Königliche Hof- und Staatsdruckerei; in Commission bei K. Gerold's Sohn, 1869)

Remarks on the geographical distribution of British plants : chiefly in connection with latitude, elevation, and climate - Watson, Hewett Cottrell, 1804 -1881 (Printed for Longman, Rees, Orme, Brown, Green, and Longman, 1835)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1844)

Repertorium specierum novarum regni vegetabilis. Beihefte (Verlag des Repertoriums, 1924)

Report and transactions - Guernsey Society of Natural Science; Local Research. (The Society, 1890-1922, 1900)

Report / Haileybury Natural Science Society - Haileybury Natural Science Society. (1873)

[Report made by Lieut. J.W. Abert of such objects as came under ... observation ... during the journey from Fort Leavenworth to Bent's Fort in the year 1846 - United States. Army. Corps of Engineers. (1848)

Report of Dr. Torrey on the Botanical Department of the Survey. [Catalogue of plants.] - Torrey, John, 1796 -1873 (1890)

Report of the ... Australasian Association for the Advancement of Science - Australasian Association for the Advancement of Science. (The Association, 1890)

Report of the ... Australasian Association for the Advancement of Science - Australasian Association for the Advancement of Science. (The Association, 1900)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1885)

Report of the Folkestone Natural History Society - Folkestone Natural History Society. (1871)

Report on explorations of the Churchill and Nelson Rivers and around God's and Island Lakes, 1879 - Geological Survey of Canada (Dawson Brothers, 1880)

Report on Natal Botanic Gardens and Colonial Herbarium for the year ... - Wood, John Medley, 1827 -1915 ([Durban Botanic Society], 1909)

Report on the botany of the expedition - Gray, Asa, 1810 -1888 (War Dept, 1855)

Report on the botany of the expedition - Torrey, John, 1796 -1873 ([s.n.], 1857)

A Report on the Cretaceous paleontology of New Jersey - New Jersey Geological Survey. (1886)

A report on the Cretaceous paleontology of New Jersey; based upon the stratigraphic studies of George N. Knapp - Weller, Stuart, 1870 -1927 (MacCrellish & Quigley, state printers, 1907)

Report on the geology and resources of the region in the vicinity of the forty-ninth parallel, from the Lake of the Woods to the Rocky Mountains - Dawson, George Mercer, 1849 -1901 (Dawson, 1875)

Report on the scientific results of the voyage of H.M.S. Challenger during the years 1873-76 under the command of Captain George S. Nares ... and the late Captain Frank Tourle Thomson, R.N - Thomson, C. Wyville, Sir, (Charles Wyville), 1830 -1882 (Neill, 1885)

Report on the United States and Mexican boundary survey :made under the direction of the secretary of the Interior - Emory, William H. 1811 -1887 (C. Wendell, printer, 1859)

Report on the work of the Horn Scientific Expedition to Central Australia - Horn, William Austin, 1841 -1922 (Dulau, 1896)

Report (to accompany bill S. no. 241) - Linn, Lewis Fields, 1795 -1843 (Blair & Rives, printers, 1838)

Report upon United States Geographical surveys west of the one hundredth meridian - Geographical Surveys West of the 100th Meridian (U.S.) (G.P.O, 1878)

Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean - Baird, Spencer Fullerton, 1823 -1887 (A.O.P. Nicholson, Printer [etc.], 1856)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1903)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1901)

Reports of the Survey. Botanical series - Geological; Natural History Survey of Minnesota. (1892)

Reports on the herbaceous plants and on the quadrupeds of Massachusetts - Dewey, Chester, 1784 -1867 (Folsom, Wells, and Thurston, 1840)

Resources of the southern fields and forests, medical, economical, and agricultural - Porcher, Francis Peyre, 1825 -1895 (Walker, Evans & Cogswell, printers, 1869)

Return / British Museum - British Museum (Natural History) (British Museum, 1856)

A review of the modern state of botany, with a particular reference to the natural systems of Linnaeus and Jussieu - Smith, James Edward, 1759 -1828 (Longman, Rees, Orme, Brown, Green, and Longman, 1832)

A review of the primates - Elliot, Daniel Giraud, 1835 -1915 (American Museum of Natural History, 1912)

A review of the primates - Elliot, Daniel Giraud, 1835 -1915 (American Museum of Natural History, 1913)

Revision of the Aphelininæ of North America : a subfamily of hymenopterous parasites of the family Chalcididæ - United States. Office of Experiment Stations. (G.P.O, 1895)

Revista do Museu Paulista - Museu Paulista (O Museu, 1926)

Revue botanique :recueil mensuel ... - Duchartre, Pierre Etienne Simon, 1811 -1894 (A. Franck, 1846)

Revue critique des hyménoptères fouisseurs de Belgique - Wesmael, Constantin. (1852)

Revue et magasin de zoologie pure et appliquée - Société Cuvierienne. (Bureau de la Revue et Magasin de Zoologie, 1875)

Revue horticole (Librairie agricole de la maison rustique, 1872)

Revue horticole (Librairie agricole de la maison rustique, 1897)

Revue mensuelle d'entomologie pure et appliquée - Dokhtouroff, Wladimir. (1884)

Revue méthodique et critique des collections déposées dans cet établissement - Rijksmuseum van Natuurlijke Historie te Leiden. (Rijksmuseum van Natuurlijke Historie, 1876)

Revue zoologique africaine (Hayez, 1911)

Rhododendrons, boxwood, azaleas, clematis, novelties, bay trees, hardy plants, evergreens : novelties bulbs, cannas novelties, palms, araucarias, ferns, vines, orchids, flowering shrubs, ornamental grasses and trees - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1902)

Riverview Orchids : greenhouses, Anderson Blvd., East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1958)

Riverview Orchids : greenhouses - Anderson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1955)

Riverview Orchids : greenhouses - Anderson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1954)

Riverview Orchids : greenhouses - Anerson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1956)

Riverview Orchids : greenhouses - Anerson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1950)

Riverview Orchids : greenhouses, Anerson Boulevard, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1957)

Riverview Orchids, greenhouses, East Liverpool, Ohio - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Riverview Orchids, 1947)