Rad - Jugoslavenska akademija znanosti i umjetnosti. Razred za prirodne nauke. (Jugoslavenska akademija znanosti i umjetnosti, 1873)

Rambles of a naturalist in Egypt & other countries. With an analysis of the claims of certain foreign birds to be considered British, and other ornithological notes - Gurney, J. H. (John Henry), 1848 -1922 (Jarrold, 1876)

Rambles of a naturalist round Folkestone : with occasional papers on the fauna and flora of the district, to which are added lists of plants, lepidoptera, birds, and land and freshwater shells - Ullyett, Henry. (J. English, 1880)

Le règne animal distribué d'après son organisation, pour servir de base à l'histoire naturelle des animaux et d'introduction à l'anatomie comparée - Cuvier, Georges, baron, 1769 -1832 (Chez Déterville, 1829)

Reading Naturalist. Reading - Reading Natural History Society.

Recensio avium in academici liberi baronis de Mueller ornithologico museo stuttgardiano collectarum - Calwer, C. G. (Carl Gustav), 1821 -1874 (Officinae Regiae, 1854)

Recherches anatomiques et paléontologiques pour servir à l'histoire des oiseaux fossiles de la France - Milne-Edwards, Alphonse, 1835 -1900 (Victor Masson, 1869)

Recherches anatomiques, histologiques et embryologiques sur l'appareil gastrique des oiseaux - Cazin, Maurice (G. Masson, 1888)

Recherches sur la faune de Madagascar et de ses dépendances - Hoffmann, C. K. 1841 -1903 (J.K. Steenhoff, 1868)

Recherches sur la faune ornithologique éteinte des iles Mascareignes et de Madagascar - Milne-Edwards, Alphonse, 1835 -1900 (G. Masson, 1866)

Recherches sur la glande uropygienne des oiseaux - Paris, Paul, 1875 -1938. (Librairie A. Schulz, 1913)

Record of Proceedings / Cleveland Naturalists' Field Club - Cleveland Naturalists' Field Club. (1899)

The Record of zoological literature (J. van Voorst, 1868)

Records of the Australian Museum - Australian Museum (Printed by order of the Trustees, 2010)

Recreations in shooting: with some account of the game of the British islands - Carleton, John William, -1856 (Chapman, 1846)

Le règne animal distribué d'après son organisation : pour servir de base a l'histoire naturelle des animaux et d'introduction a l'anatomie comparée - Cuvier, Georges, baron, 1769 -1832 (Chez Déterville, 1817)

Le règne animal distribué d'après son organisation, pour servir de base à l'histoire naturelle des animaux et d'introduction à l'anatomie comparée - Cuvier, Georges, baron, 1769 -1832 (Louis Hauman et Comp, 1836)

Le règne animal distribué d'après son organisation, pour servir de base à l'histoire naturelle des animaux et d'introduction à l'anatomie comparée - Audouin, Jean Victor, 1797 -1841 (Fortin, Masson et cie, 1836)

Reise in den äussersten Norden und Osten Sibiriens während der Jahre 1843 und 1844 mit Allerhöchster Genehmigung auf Veranstaltung der Kaiserlichen Akademie der Wissenschaften zu St. Petersburg ausgeführt und in Verbindung mit vielen Gelehrten - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Buchdr. der K. Akademie der Wissenschaften : Zu haben bei Eggers, 1875)

Reisen im Süden von Ost-Sibirien in den Jahren 1855-1859, incl - Geograficheskoe obshchestvo SSSR (Buchdruckerei der K. Akademie der Wissenschaften, 1863)

Reisen und Forschungen im Amur-Lande in den Jahren 1854-1856 - Schrenck, Leopold von, 1826 -1894 (Commissionäre der K. Akademie der Wissenschaften, 1858)

Relationships of the superorders Alectoromorphae and Charadriomorphae (Aves) : a comparative study of the avian hand - Stegmann, Boris C. (Nuttall Ornithological Club, 1978)

Report & transactions - Birmingham Natural History; Microscopical Society (Birmingham, England) (Herald Press)

Report and Proceedings of the Belfast Natural History and Philosophical Society - Belfast Natural History; Philosophical Society. (1917)

Report and Transactions of the Glasgow Society of Field Naturalists - Glasgow Society of Field Naturalists. (Glasgow Society of Field Naturalists, 1873)

Report / Bristol Museum and Library (and Art Gallery) - Bristol Museum; Library. (1908)

Report / Bury Natural History Society - Bury Natural History Society. (Bury Natural History Society, 1872)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1840)

Report of the Chester Society of Natural Science, Literature and Art - Chester Society of Natural Science Literature; Art. (1886)

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

Report of the (Free) Public Library, Museum (Liverpool) - Liverpool (England). Free Public Library. Museum (1854)

Report of the (Free) Public Library, Museum (Liverpool) - Liverpool (England). Free Public Library. Museum (1897)

Report of the (Free) Public Library, Museum (Liverpool) - Liverpool (England). Free Public Library. Museum (1905)

Report of the Leeds Philosophical & Literary Society - Leeds Philosophical; Literary Society.

Report on the migration of birds - Harvie-Brown, J. A. (John Alexander), 1844 -1916 (1880)

Report on the migration of birds - Harvie-Brown, J. A. (John Alexander), 1844 -1916 (1881)

Report on the migration of birds - Harvie-Brown, J. A. (John Alexander), 1844 -1916 (1883)

Report on the migration of birds - Harvie-Brown, J. A. (John Alexander), 1844 -1916 (1884)

Report on the migration of birds - Harvie-Brown, J. A. (John Alexander), 1844 -1916 (1885)

Report on the migration of birds - Harvie-Brown, J. A. (John Alexander), 1844 -1916 (1886)

Report on the migration of birds - Harvie-Brown, J. A. (John Alexander), 1844 -1916 (1887)

Reports and transactions - Cardiff Naturalists' Society. (1867)

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.], 1858)

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.], 1853)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1904)

Researches in zoology, illustrative of the structure, habits, and economy of animals - Blackwall, John, 1790 -1881 (John Van Voorst, 1873)

Resultate der Wissenschaftlichen Erforschung des Balatonsees - Hungary. Földmm̋uvelésügyi Minisztérium. (E. Hölzel, 1897)

A revised catalogue of the birds of China and its islands, with descriptions of new species, references to former notes, and occasional remarks - Swinhoe, Robert, 1836 -1877 (1871)

Revised list of the vertebrated animals now or lately living in the gardens of the Zoological society of London. 1872 - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society, 1872)

Revue critique de l'Ornithologie Européenne de M. De Selys Longchamps - Bonaparte, Charles-Lucien, 1803 -1857 (1850)

Revue critique des oiseaux d'Europe - Schlegel, H. (Hermann), 1804 -1884 (A. Arnz et comp.; [etc., etc.], 1844)

Revue des sciences naturelles appliquées - Société nationale d'acclimatation de France (La Société, 1889)

Revue des sciences naturelles appliquées - Société nationale d'acclimatation de France (La Société, 1892)

Revue des sciences naturelles appliquées - Société nationale d'acclimatation de France (La Société, 1894)

Revue des sciences naturelles de l'ouest - Institut international de bibliographie scientifique. (Revue des sciences naturelles de l'ouest, 1893)

Revue et magasin de zoologie pure et appliquée - Société Cuvierienne. (Bureau de la Revue et Magasin de Zoologie, 1867)

Revue française d'ornithologie - Société ornithologique et mammalogique de France. (L. Denise, 1909)

Revue française d'ornithologie - Société ornithologique et mammalogique de France. (L. Denise, 1911)

Revue méthodique et critique des collections déposées dans cet établissement - Rijksmuseum van Natuurlijke Historie te Leiden. (Rijksmuseum van Natuurlijke Historie, 1863)

Revue méthodique et critique des collections déposées dans cet établissement - Rijksmuseum van Natuurlijke Historie te Leiden. (Rijksmuseum van Natuurlijke Historie, 1880)

Revue méthodique et critique des collections déposées dans cet établissement - Rijksmuseum van Natuurlijke Historie te Leiden. (Rijksmuseum van Natuurlijke Historie, 1898)

Revue méthodique et critique des collections déposées dans cet établissement - Rijksmuseum van Natuurlijke Historie te Leiden. (Rijksmuseum van Natuurlijke Historie, 1894)

Revue scientifique du Bourbonnais et du centre de la France - Olivier, Ernest, 1844 -1914 (Impr. É. Auclaire, 1895)

Revue scientifique du Bourbonnais et du centre de la France - Olivier, Ernest, 1844 -1914 (Impr. É. Auclaire, 1908)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1946)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1954)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1959)

Rhea - Thienemann, Friedrich August Ludwig, 1793 -1858 (F.A. Brockhaus, 1846)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1912)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1913)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1911)

Rivista italiana di ornitologia - Museo civico di storia naturale di Milano. (Società italiana di scienze naturali, 1920)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1892)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1888)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1894)

The romance of bird life : being an account of the education, courtship, sport and play, journeys, fishing, fighting, piracy, domestic and social habits, instinct, strange friendships and other interesting aspects of the life of birds - Lea, John. (Seeley & Co, 1909)

Rough notes on the Birds observed during twenty-five years shooting and collecting in the British Islands - Booth, Edward Thomas, 1840 -1890 (1881)

Rovartani lapok : havi folyóirat különös tekintettel a hasznos és kártékony rovarokra - Magyar Entomologiai Társaság. (Magyar Entomologiai Társaság, 1914)

The royal natural history - Lydekker, Richard, 1849 -1915 (Frederick Warne & Co, 1895)

The royal natural history - Lydekker, Richard, 1849 -1915 (F. Warne, 1895)

Die Sammlungen des kaukasischen Museums Bd. 1 Zoologie, von Dr. Gustav Radde - Radde, Gustav, 1831 -1903 (Typographie der Kanzelei des Landeschefs, 1899)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1980)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1981)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1982)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1983)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1986)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1987)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1991)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1994)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1996)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1997)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1998)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 1999)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2003)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2004)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2005)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2006)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2007)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2008)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2009)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2010)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2012)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2013)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2014)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2015)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2016)