Transactions of the Zoological Society of London - Zoological Society of London. (Published for the Zoological Society of London by Academic Press, 1877)

Transactions of the Zoological Society of London - Zoological Society of London. (Published for the Zoological Society of London by Academic Press, 1879)

Transactions of the Zoological Society of London - Zoological Society of London. (Published for the Zoological Society of London by Academic Press, 1881)

Transactions of the Zoological Society of London - Zoological Society of London. (Published for the Zoological Society of London by Academic Press, 1903)

Transactions of the Zoological Society of London : an index to the artists, 1835-1936 - Zoological Society of London. (Garland Pub, 1986)

Travels in New Zealand with contributions to the geography, geology, botany, and natural history of that country - Dieffenbach, Ernst, 1811 -1855 (J. Murray, 1843)

Travels in the Confederation, 1783-1784 - Morrison, Alfred J. (W.J. Campbell, 1911)

Travels in the interior of South Africa, comprising fifteen years' hunting and trading; with journeys across the continent from Natal to Walvis Bay, and visits to Lake Ngami and the Victoria Falls - Chapman, James, traveller. (Bell & Daldy, 1868)

Travels through Sweden, Finland, and Lapland, to the North Cape : in the years 1798 and 1799 - Acerbi, Giuseppe, 1773 -1846 (Printed for Joseph Mawman, 1802)

Travels through that part of North America formerly called Louisiana - Forster, Johann Reinhold, 1729 -1798 (Printed for T. Davies, 1771)

A travers l'Afrique equatoriale - Pilette, Andre. (O. Lamberty, 1914)

The treasury of natural history; or, A popular dictionary of animated nature: in which the zoological characteristics that distinguish the different classes, genera, and species, are combined with a variety of interesting information illustrative of the habits, instincts, and general economy of the animal kingdom. To which are added, A syllabus of practical taxidermy, and A glossarial appendix. Embellished with nine hundred woodcuts, expressly engraved for this work - Maunder, Samuel, 1785 -1849 (Longman, Brown, Green, and Longmans, 1852)

A treatise on the geography and classification of animals - Swainson, William, 1789 -1855 (Longman, Rees, Orme, Brown, Green & Longman, Taylor, 1835)

A treatise on the geography and classification of animals - Swainson, William, 1789 -1855 (Printed for Longman, Rees, Orme, Brown, Green & Longman, 1835)

A treatise on the geography and classification of animals - Swainson, William, 1789 -1855 (Printed for Longman, Rees, Orme, Brown, Green & Longman and John Taylor, 1835)

Trematodes of the Pacific Northwest, an annotated catalog - McCauley, James Elias. (Oregon State University Press, 1961)

Trinidad, its geography, natural resources, administration, present condition, and prospects - Verteuil, L. A. A. de (Cassell, 1884)

Trinidad: its geography, natural resources, administration, present condition, and prospects - De Verteuil, Louis Antoine Aimé Gaston, 1807 - (Ward and Lock, 1858)

Tryonia - Academy of Natural Sciences of Philadelphia. Department of Malacology. (Dept. of Malacology, Academy of Natural Sciences of Philadelphia, 1990)

Turner on birds : a short and succinct history of the principal birds noticed by Pliny and Aristotle first published by Doctor William Turner, 1544 - Evans, A. H. (Arthur Humble) (University Press, 1903)

Turner on birds; a short and succinct history of the principal birds noticed by Pliny and Aristotle, first published by Doctor William Turner, 1544 - Evans, A. H. (Arthur Humble) (University Press, 1903)

Turner on birds: a short and succinct history of the principal birds noticed by Pliny and Aristotle first published by Doctor William Turner, 1544 - Evans, A. H. (Arthur Humble) (University press, 1903)

Two bird-lovers in Mexico - Beebe, William, 1877 -1962 (A. Constable & company, ltd, 1905)

Two bird-lovers in Mexico - Beebe, William, 1877 -1962 (Houghton, Mifflin, 1905)

Type-specimens of birds in the British Museum (Natural History) - British Museum (Natural History) (BM(NH), 1973)

Über zwei verschiedene Typen in dem Bau der erectilen männlichen Geschlechts-Organe bei den strafssartigen Vögeln und über die Entwickelungsformen dieser Organe unter den Wirbelthieren überhaupt - Müller, Johannes, 1801 -1858 (K. Akademie der Wissenschaften, 1838)

Übersicht der Säugethiere und Vögel der Kola-Halbinsel - Pleske, F. D. (Feodor Dmitrievich), 1858 -1932 (K. Akademie der Wissenschaften, 1886)

Übersicht der Säugethiere und Vogel der Kola-Halbinsel - Pleske, F. D. (Feodor Dmitrievich), 1858 -1932 (Buchdruckerei der Kaiserlichen Akademie der Wissenschaften, 1886)

Über das System und die Charakteristik der natürlichen Familien der Vögel - Fitzinger, Leopold Joseph, 1802 -1884 (Kais. Kön. Hof- und Staatsdruckerei, 1856)

Über zwei verschiedene Typen in dem Bau der erectilen männlichen Geschlechtsorgane bei den strafssartigen Vögeln und über die Entwickelungsformen dieser Organe unter den Wirbelthieren überhaupt - Royal College of Physicians of Edinburgh. ([Gedruckt in der Druckerei der Königlichen Akademie der Wissenschaften], 1836)

Uccelli dello scioa e della regione fra zeila e lo scioa - Salvadori, Tommaso, 1835 -1923 (Tip. del Regio istituto sordo-muti, 1884)

Ueber die Verbreitung der übriggebliebenen reste einer vorweltlichen organischen Schöpfung : insbesondere die geographische Verbreitung derselben in Vergleich mit der, der noch jetzt existirenden organischen Wesen / von Friedrich Sigismund Leuckart - Leuckart, F. S. (Friedrich Sigismund), 1794 -1843 (Universitäts-Buchandlung und Buchdruckerei der Gebr. Groos, 1835)

The "Undercliff" of the Isle of Wight; its climate, history, and natural productions - Martin, George Anne, 1807 or 8 -1867 (J. Churchill, 1849)

United States Exploring Expedition. During the year 1838, 1839, 1840, 1841, 1842 - United States. Congress. (Printed by C. Sherman, 1858)

University of California publications in zoology - University of California, Berkeley. (University Press, 1913)

University of California publications in zoology - University of California, Berkeley. (University Press, 1914)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1946)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1951)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1956)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1954)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1958)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1959)

The University of Kansas science bulletin - University of Kansas. Museum of Natural History. (University of Kansas, 1958)

Unterhaltungen aus der Naturgeschichte [4-5] der Vögel, erster [-zweyter] Theil - Wilhelm, Gottlieb Tobias, 1758 -1811 (In der M. Engelbrechtischen Kunsthandlung, 1795)

Untersuchungen über die Fauna Peruana - Humboldt, Alexander von, 1769 -1859 (Scheitlin und Zollikofer, 1844)

Untersuchungen über den Bau des Knöchernen Vogelkopfes - Magnus, Hugo. (Wilhelm Engelmann, 1870)

Untersuchungen über die Verbreitung des Tigers (Felis tigris) und seine Beziehungen zur Menschheit : ein Sendschreiben an den Herrn Baron A. v. Humboldt - Brandt, Johann-Friedrich, 1802 -1879 (Buchdr. der Kaiserlichen Akademie der Wissenschaften, 1856)

Untersuchungen zur Morphologie und Systematik der Vögel, zugleich ein Beitrag zur Anatomie der Stütz- und Bewegungsorgane - Fürbringer, Maximilian, 1846 -1920 (T. van Holkema, 1888)