Studies on the structure & development of vertebrates - Goodrich, Edwin S. (Edwin Stephen), 1868 -1946 (Macmillan, 1930)

A study guide in general science and biology for the Smithsonian scientific series - Eisman, Louis (Smithsonian Institution Series, 1936)

The study of animal life - Thomson, J. Arthur (John Arthur), 1861 -1933 (C. Scribner's sons [printed at the Edinburgh press], 1896)

The study of animal life - Thomson, J. Arthur (John Arthur), 1861 -1933 (C. Scribner's sons [printed at the Edinburgh press], 1892)

The study of animal life - Thomson, J. Arthur (John Arthur), 1861 -1933 (Murray, 1892)

The study of animal life - Thomson, J. Arthur (John Arthur), 1861 -1933 (Morang, 1902)

The study of animal life - Thomson, J. Arthur (John Arthur), 1861 -1933 (C. Scribner's sons, [printed at the Edinburgh press,], 1917)

The study of animal life - Thomson, J. Arthur (John Arthur), 1861 -1933 (Scribner, 1917)

The study of animal life - Thomson, J. Arthur (John Arthur), 1861 -1933 (C. Scribner's sons, 1906)

The study of animal life - Thomson, J. Arthur (John Arthur), 1861 -1933 (J. Murray, 1892)

A study of the incubation periods of birds; what determines their lengths - Bergtold, W. H. (William Harry), 1865 -1956 (The Kendrick-Bellamy co, 1917)

Stuttgarter Beiträge zur Naturkunde. Serie A, Biologie - Staatliches Museum für Naturkunde in Stuttgart. (Staatliches Museum für Naturkunde, 1977)

Stuttgarter Beiträge zur Naturkunde. Serie B, Geologie und Paläontologie - Staatliches Museum für Naturkunde in Stuttgart. (Staatliches Museum für Naturkunde, 1992)

Supplement to the 'Birds of New Zealand' - Buller, Walter Lawry, Sir, 1838 -1906 (The author, 1905)

Syllabus of lectures on the vertebrata - Cope, E. D. (Edward Drinker), 1840 -1897 (For the University of Pennsylvania, 1898)

A synopsis of the animal kingdom : together with a laboratory practicum of invertebrate zoölogy / by Harris H. Wilder - Wilder, Harris Hawthorne, 1864 -1928 (1894)

Synopsis of the extinct Batrachia, Reptilia and Aves of North America - Cope, E. D. (Edward Drinker), 1840 -1897 (McCalla & Stavely, 1869)

A synoptic text-book of zoölogy, for colleges and schools - Weysse, Arthur Wisswald, 1867 - (Macmillan, 1904)

System of ophthalmology - Duke-Elder, Stewart, Sir, 1898 -1978 (Mosby, 1958)

Systematics and zoogeography of the land and fresh-water mollusca of the New Hebrides - Solem, Alan, 1931 - (Chicago Natural History Museum, 1959)

Systematics of the West Indian lizard genus Leiocephalus (Squamata: Iguania: Tropiduridae) - Pregill, Gregory K. (Museum of Natural History, The University of Kansas, 1992)

Systematische Phylogenie ... - Haeckel, Ernst, 1834 -1919 (G. Reimer, 1895)

Systematische phylogenie - Haeckel, Ernst, 1834 -1919 (Georg Reimer, 1895)

Taxonomic composition and systematics of late Cretaceous lizard assemblages from Ukhaa Tolgod and adjacent localities, Mongolian Gobi Desert - Norell, Mark A. (American Museum of Natural History, 2000)

La terre avant l'histoire; les origines de la vie et de l'homme - Perrier, Edmond, 1844 -1921 (Renaissance du livre, 1920)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1955)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1958)

Text-book of embryology - Kerr, John Graham, 1869 -1957 (MacMillan, 1919)

Text-book of embryology - Heape, Walter, 1855 -1929 (Macmillan, 1919)

Text-book of palaeontology - Eastman, Charles Rochester, 1868 -1918 (Macmillan, 1902)

Text book of vertebrate zoology - Kingsley, J. S. (John Sterling), 1854 -1929 (H. Holt and Company, 1899)

Text book of vertebrate zoology - Kingsley, J. S. (John Sterling), 1854 -1929 (H. Holt, 1899)

A text-book of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (Macmillan, 1921)