Ophidians, zoological arrangement of the different genera, including varieties known in North and South America, the East Indies, South Africa, and Australia. Their poisons, and all that is known of their nature. Their galls, as antidotes to the snake-venom - Higgins, S. B. (Boericke & Tafel, 1873)

The Orchid review (Orchid Review ltd.], 1900)

The Orchid review (Orchid Review ltd.], 1902)

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

The Orchid review (Orchid Review ltd.], 1913)

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

Orchids - O'Brien, James (Frederick A. Stokes co, 1911)

Orchids : a description of the species and varieties grown at Glen Ridge, near Boston, with lists and descriptions of other desirable kinds : prefaced by chapters - Rand, Edward Sprague, 1834 -1897 (Hurd and Houghton, 1876)

Orchids; a description of the species and varieties grown at Glen Ridge, near Boston, with lists and descriptions of other desirable kinds : preface by chapters on the culture, propagation, collection, and hybridization of orchids; the construction and management of orchid houses; a glossary of botanical terms and significance of their names; the whole forming a complete manual of orchid culture - Rand, Edward Sprague, Jr., 1834 -1897 (Houghton, Mifflin and company, 1888)

Orchids - O'Brien, James (T.C. & E.C. Jack, 1911)

Orchids - O'Brien, James (T. C. & E. C. Jack, 1911)

Orchids for everyone - Curtis, Charles H. (J.M. Dent, 1910)

Orchids, their structure, history & culture - Castle, R. Lewis ("Journal of horticulture" Office, 1886)

Orchis :Monatsschrift der Deutschen Gesellschaft für Orchideenkunde - Dammer, Udo. (1908)

Die ordnungen, familien und gattungen der reptilien als prodrom einer naturgeschichte derselben - Oppel, Michael, 1782 -1820 (In commission bey J. Lindauer, 1811)

The organization of Trilobites, deduced from their living affinities. With a systematic review of the species hitherto described - Bell, Thomas, 1792 -1880 (Printed for the Ray Society, 1846)

The origin of the fittest : essays on evolution - Cope, E. D. (Edward Drinker), 1840 -1897 (D. Appleton, 1887)

The origin of the fittest : essays on evolution - Cope, E. D. (Edward Drinker), 1840 -1897 (Macmillan and Company, 1887)

The origin of the fittest; essays on evolution - Cope, E. D. (Edward Drinker), 1840 -1897 (D. Appleton, 1887)

Ornis - International Ornithological Committee. (Carl Gerold's Sohn, 1886)

Ornithological gazetteer of Uruguay - Paynter, Raymond A. Jr. (Obtainable from Bird Dept., Museum of Comparative Zoology, Harvard University, 1994)

Ornithologie de la Savoie, ou, Histoire des oiseaux : qui vivent en Savoie a l'état sauvage soit constamment, soit passagèrement - Bailly, J.-B. (Jean-Baptiste) (J.-B. Clary, 1853)

Ornithologie, ou, Méthode contenant la division des oiseaux en ordres, sections, genres, especes & leurs variétés : a laquelle on a joint une description exacte de chaque espece, avec les citations des auteurs qui en ont traité, les noms quils leur ont donnés, ceux que leur ont donnés les différentes nations, & les noms vulgaires - Martinet, François Nicolas, 1731 -1800 (Ad Ripam Augustinorum, apud Cl. Joannem-Baptistam Bauche, bibliopolam, ad Insigne S. Genovesae, & S. Joannis in Deserto, 1760)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1897)

Ortus sanitatis - Prüss, Johann, 1446 or 1447 -1510 (J. Prüss)

Ortus sanitatis - Prüss, Johann, 1446 or 1447 -1510 (Johann Prüss)

The Osprey (The Osprey Co, 1898)

O.S.U. naturalist - Ohio State University. Biological Club. (Biological Club of Ohio State University, 1901)

Otia conchologica : descriptions of shells and mollusks from 1839 to 1862 / by Augustus A. Gould, M.D - Gould, Augustus A. (Augustus Addison), 1805 -1866 (1846)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1899)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1903)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1906)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1907)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1918)

Our country's animals and how to know them. A guide to the mammals, reptiles and amphibians of Great Britain - Gordon, W. J. (Simpkin, Marshall, Hamilton, Kent, 1904)

Our living resources : a report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems - United States. National Biological Service. (U.S. Dept. of the Interior, National Biological Service, 1995)

Our living world; an artistic edition of the Rev. J. G. Wood's Natural history of animate creation - Wood, J. G. (John George), 1827 -1889 (S. Hess, 1885)

Our reptiles and batrachians; a plain and easy account of the lizards, snakes, newts, toads, frogs and tortoises indigenous to Great Britain - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (W. H. Allen & co., limited, 1893)

Our reptiles and batrachians : a plain and easy account of the lizards, snakes, newts, toads, frogs and tortoises indigenous to Great Britain - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (W. H. Allen & co., limited, 1893)

Our reptiles. A plain and easy account of the lizards, snakes, newts, toads, frogs, and tortoises indigenous to Great Britain - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (R. Hardwicke, 1865)

Ouresiphoitēs Helveticus, sive, Itinera per Helvetiae Alpinas regiones facta annis MDCCII, MDCCIII, MDCCIV, MDCCV, MDCCVI, MDCCVII, MDCCIX, MDCCX, MDCCXI : plurimis tabulis aeneis illustrata - Scheuchzer, Johann Jakob, 1672 -1733 (Typis ac sumptibus Petri Vander Aa, 1723)

Oursins fossiles de deux arrondissements du département de l'Eure (Louviers et Andelys) / par M. Sorignet, curé de Veronnet - Sorignet, A. (impr. Barbarot, 1850)

The out-door world, or, Young collector's handbook - Furneaux, William S. (Longmans, Green, 1893)

An outline of developmental physiology - Raven, Chr. P. (Chr. Pieter), 1906 - (McGraw-Hill, 1954)

Outlines of comparative anatomy of vertebrates - Kingsley, J. S. (John Sterling), 1854 -1929 (P. Blakiston, 1917)

Outlines of economic zoölogy - Reese, A. M. (Albert Moore), 1872 -1965 (P. Blakiston's Son & Co, 1919)

Outlines of general zoology - Baird, Spencer Fullerton, 1823 -1887 (Rudolph Garrigue, 1851)

Outlines of the natural history of Great Britain and Ireland, containing a systematic arrangement and concise description of all the animals, vegetables and fossiles which have hitherto been discovered in these kingdoms - Berkenhout, John, 1730 -1791 (Printed for P. Elmsly (Successor to Mr. Vaillant), 1769)

Outlines of the natural history of Great Britain and Ireland, containing a systematic arrangement and concise description of all the animals, vegetables and fossiles which have hitherto been discovered in these kingdoms - Berkenhout, John, 1730 -1791 (Printed for P. Elmsly (Successor to Mr. Vaillant), 1770)

Outlines of vertebrate palæontology for students of zoology - Woodward, Arthur Smith, 1864 -1944 (University Press, 1898)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Young J. Pentland, 1892)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Pentland, 1899)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton & Co, 1892)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Young J. Pentland, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton & Co, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (H. Frowde and Hodder & Stoughton, 1921)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Humphrey Milford, Oxford University Press, 1929)

Oeuvres du Comte de Lacépède, comprenant l'histoire naturelle des quadrupèdes ovipares, des serpens, des poissons et des cétacés - La Cépède, M. le comte de (Bernard Germain Etienne de La Ville sur Illon), 1756 -1825 (Duménil, 1836)

Over de ontwikkeling van het chondrocranium en de kraakbeenige wervelkolom van eenige Urodela en Anura - Peeters, Johannes Leonardis Elbertus. (G.F. Theonville, 1910)

Oversigt over det Kongelige Danske videnskabernes selskabs forhandlinger = Bulletin de l'Académie royale des sciences et des lettres de Danemark - Kongelige Danske videnskabernes selskab. (A.F. Høst, 1836)

Oversigt over det Kongelige Danske videnskabernes selskabs forhandlinger = Bulletin de l'Académie royale des sciences et des lettres de Danemark - Kongelige Danske videnskabernes selskab. (A.F. Høst, 1846)

Oversigt over Gronlands Echinodermata samt over denne Dyreklasses geographiske og bathymetriske udbredningsforhold i de nordiske Have - Lütken, Chr. Fr. (Christian Frederik), 1827 -1901 (1857)

P.A. Latreille scientiarum et artium instituti Gallici ... Genera crustaceorum et insectorum : secundum ordinem naturalem in familias disposita, iconibus exemplisque plurimis explicata - Latreille, P. A. (Pierre André), 1762 -1833 (Apud Amand Knig, Bibliopolam, 1806)

Pacific science - University of Hawaii. (University Press of Hawaii, 1950)

Pacific science - University of Hawaii. (University Press of Hawaii, 1960)

The pagan tribes of Borneo; a description of their physical, moral intellectual condition, with some discussion of their ethnic relations - Haddon, Alfred C. (Alfred Cort), 1855 -1940 (Macmillan, 1912)

Palaeontographica (Theodor Fischer, 1859)

Palaeontographica (Theodor Fischer, 1882)

Palaeontology - Palaeontological Association (Palaeontological Association, 1990)

Palearctic Migratory Bird Survey, survey records, 1966-1973 : Egypt banding information (DOA/Release), Spring-Fall 1970, PMS banding forms - Granger, J. S. (1970)

Paléontologie de Maine et Loire : comprenant avec des observations et l'indication des diverses formations géologiques du département de Maine et Loire, un relevé des roches, des minéraux et des fossiles qui se rapportent à chacune d'elles / par P.-A. Millet - Millet de La Turtaudière, P.-A. 1783 -1873 (Impr. de Cosnier et Lachèse, 1854)

Paléontologie française : description zoologique et géologique de tous les animaux mollusques et rayonnés fossiles de France : comprenant leur application à la reconnaissance des couches - Orbigny, Alcide Dessalines d', 1802 -1857 (Chez l'auteur, 1840)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1882)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1918)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1991)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1993)

Papers from the Tortugas Laboratory of the Carnegie Institution of Washington - Carnegie Institution of Washington. Department of Marine Biology. (Carnegie Institution of Washington, 1917)

Papers on cereal and forage insects. The timothy stem-borer, a new timothy insect [Mordellistena ustulata Lec.] - Phillips, William J. (Govt. Print. Off, 1911)

Parasites and parasitic diseases of swine in Puerto Rico - Van Volkenberg, H. L. (Horatio Luther), 1893 - (Puerto Rico Agricultural Experiment Station, 1936)

Parasitology (Cambridge University Press, 1920)

Parte práctica de botánica del caballero Cárlos Linneo, que comprehende las clases, órdenes, géneros, especies y variedades de las plantas, con sus caracteres genéricos y especificos, sinónimos mas selectos, nombres triviales, lugares donde nacen, y propriedades - Linné, Carl von, 1707 -1778 (En la Imprenta Real, 1784)

Partnerships for sustainable forest ecosystem management : fifth Mexico/U.S. biennial symposium : October 17-20, 1994, Guadalajara, Jalisco, Mexico - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1995)

Pássaros do Brasil (vida e costumes) - Santos, Eurico (F. Briguiet & Cia, 1940)

Patterns and problems of development - Child, Charles Manning, 1869 -1954 (The University of Chicago Press, 1941)

The pears of New York - New York State Agricultural Experiment Station. (J. B. Lyon company, 1921)

The pears of New York - New York (State). Dept. of Agriculture. (J. B. Lyon company, 1921)

The pears of New York - New York (State). Dept. of Agriculture. (J.B. Lyon Co, 1921)

The pears of New York - New York State Agricultural Experiment Station. (Lyon, 1921)

Perak Museum notes - Perak State Museum. (Perak G.P.O, 1898)

La perfezione e i difetti del cavallo : opera - Allegrini, Giuseppe. (Nella Stamperia imperiale, 1753)

Periódico zoológico - Sociedad Entomológica Argentina. (Sociedad Entomica Argentina, 1874)

Perry's seeds, bulbs, plants, 1946 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Perry Seed Company, 1946)

Perú : Nanay-Mazán-Arabela - Alverson, William Surprison (Field Museum, Environmental and Conservation Programs, 2007)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)