Through a pocket lens - Scherren, Henry, 1842 -1911 (Religious Tract Society, 1904)

Tierbau und tierleben in ihrem zusammenhang betrachtet - Doflein, Franz, 1873 -1924 (B. G. Teubner, 1910)

Tierleben : allgemeine Kunde des Tierreichs - Brehm, Alfred Edmund, 1829 -1884 (Bibliographisches Institut, 1911)

Das Tierreich - Deutsche Zoologische Gesellschaft. (R. Friedländer, 1899)

Tijdschrift voor entomologie - Nederlandse Entomologische Vereniging (Nederlandse Entomologische Vereniging, 1873)

Tijdschrift voor entomologie - Nederlandse Entomologische Vereniging (Nederlandse Entomologische Vereniging, 1929)

Tijdschrift voor entomologie - Nederlandse Entomologische Vereniging (Nederlandse Entomologische Vereniging, 1951)

Trait©♭ de zoologie - Perrier, Edmond, 1844 -1921 (Masson, 1899)

Traité d'embryologie et d'organogénie comparées - Balfour, Francis M. (Francis Maitland), 1851 -1882 (Baillière, 1883)

Traité de zoologie - Claus, Carl, 1835 -1899 (F. Savy, 1884)

Traité de zoologie concrète - Delage, Yves, 1854 -1920 (Schleicher, 1896)

Traité de zoologie concrète - Delage, Yves, 1854 -1920 (Schleicher, 1903)

Traité de zoologie médicale et agricole / par A. Railliet - Railliet, A. (Alcide Louis Joseph), 1852 -1930 (Asselin et Houzeau, 1895)

Traité de zoologie - Perrier, Edmond, 1844 -1921 (Masson, 1893)

Traité de zoologie - Lanessan, Jean-Louis de, 1843 -1919 (O. Doin, 1882)

Traité élémentaire de paléontologie; ou, Histoire naturelle des animaux fossiles, considérés dans leurs rapports zoologiques et géologiques - Pictet, François Jules, 1809 -1872 (Langlois et Leclerq, 1844)

Transactions - American Microscopical Society (1913)

Transactions and proceedings of the New Zealand Institute - New Zealand Institute. (New Zealand Institute, 1872)

Transactions and proceedings of the New Zealand Institute - New Zealand Institute. (New Zealand Institute, 1917)

Transactions of the American Philosophical Society - American Philosophical Society. (1865)

Transactions of the Entomological Society of London - Royal Entomological Society of London (The Society, 1842)

Transactions of the Entomological Society of London - Royal Entomological Society of London (The Society, 1880)

Transactions of the Entomological Society of London - Royal Entomological Society of London (The Society, 1889)

Transactions of the Entomological Society of London - Royal Entomological Society of London (The Society, 1911)

Transactions of the Entomological Society of London - Royal Entomological Society of London (The Society, 1919)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1987)

Transactions of the Illinois State Horticultural Society for - Horticultural Society of Northern Illinois. (The Society)

Transactions of the Linnean Society of London - Linnean Society of London. ([The Society], 1791-1875, 1815)

Transactions of the Linnean Society of London - Linnean Society of London. ([The Society], 1791-1875, 1842)

Transactions of the Linnean Society of London - Linnean Society of London. ([The Society], 1791-1875, 1844)

Transactions of the Linnean Society of London - Linnean Society of London. ([The Society], 1791-1875, 1845)

Transactions of the Linnean Society of London - Linnean Society of London. ([The Society], 1791-1875, 1846)

Transactions of the Linnean Society of London - Linnean Society of London. ([The Society], 1791-1875, 1847)

Transactions of the Linnean Society of London - Linnean Society of London. ([The Society], 1791-1875, 1870)

Transactions of the Natural History Society of Glasgow : (including the proceedings of the society) - Natural History Society of Glasgow. (Natural History Society of Glasgow, 1896)

Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-upon-Tyne - Tyneside Naturalists' Field Club. (F. & W. Dodsworth [et al.], 1869)

Transactions of the Norfolk and Norwich Naturalists' Society - Norfolk; Norwich Naturalists' Society. (Norfolk and Norwich Naturalists' Society, 1985)

Transactions of the Norfolk and Norwich Naturalists' Society - Norfolk; Norwich Naturalists' Society. (Norfolk and Norwich Naturalists' Society, 2018)

Transactions of the Society for British entomology - Society for British Entomology (1942)

The transformations (or metamorphoses) of insects - Blanchard, Emile, 1819 -1900 (Cassell, Petter, and Galpin, 1870)

Transunti / Reale Accademia dei Lincei - Reale Accademia dei Lincei (l'Accademia, 1881)

Treatise on comparative embryology - Balfour, Francis M. (Francis Maitland), 1851 -1882 (Macmillan, 1885)

A treatise on comparative embryology - Balfour, Francis M. (Francis Maitland), 1851 -1882 (Macmillan and Co, 1880)

A treatise on zoology - Lankester, E. Ray Sir, (Edwin Ray), 1847 -1929 (A. and C. Black, 1909)

A treatise on zoology - Lankester, E. Ray Sir, (Edwin Ray), 1847 -1929 (Adam and Charles Black, 1909)

A treatise on zoology - Lankester, E. Ray Sir, (Edwin Ray), 1847 -1929 (A. and C. Black, 1903)

A treatise on zoology - Lankester, E. Ray Sir, (Edwin Ray), 1847 -1929 (Adam and Charles Black, 1903)

A treatise on zoology - Lankester, E. Ray Sir, (Edwin Ray), 1847 -1929 (A. & C. Black, 1900)

Über die Fauna des Plagefenngebietes - Dahl, Friedrich, 1856 -1929 (Gebr. Borntraeger, 1912)

Über Vorversuche zu untersuchungen über die Vareitätenbildung von Helix hortensis Müller und Helix nemoralis L - Lang, Arnold, 1855 -1914 (G. Fischer, 1904)

Umrisse der vergleichenden Anatomie - Royal College of Physicians of Edinburgh. (O. Wigand, 1842)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1902)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1912)

Das unpaare Auge, die Frontalorgane und das Nackenorgan einiger Branchiopoden - Zograf, Nikolaj Ûrʹevič, 1851 -1919 (R. Friedländer und Sohn, 1904)

Vega-expeditionens vetenskapliga iakttagelser bearbetade af deltagare i resan och andra forskare - Nordenskiöld, A. E. (Adolf Erik), 1832 -1901 (F. & G. Beijers förlag, 1887)

Vegas färd kring Asien och Europa : jemte en historisk återblick på föregående resor längs gamla verldens nordkust - Nordenskiöld, A. E. (Adolf Erik), 1832 -1901 (F. & G. Beijer, 1880)

Vergleichende Anatomie des Nervensystems - Ariëns Kappers, C. U. (Cornelius Ubbo), 1877 -1946 (De Erven F. Bohn, 1920)