Sketches of the natural history of Ceylon : with narratives and anecdotes illustrative of the habits and instincts of the mammalia, birds, reptiles, fishes, insects, &c. : including a monograph of the elephant and a description of the modes of capturing and training it : with engravings from original drawings - Tennent, James Emerson, Sir, 1804 -1869 (Longman, Green, Longman, and Roberts, 1861)

Sketches of the natural history of Ceylon : with narratives and anecdotes illustrative of the habits and instincts of the mammalia, birds, reptiles, fishes, insects, &c. : including a monograph of the elephant and a description of the modes of capturing and training it with engravings from original drawings - Tennent, James Emerson, Sir, 1804 -1869 (Longman, Green, Longman, and Roberts, 1861)

Smithsonian contributions to knowledge - Smithsonian Institution (Smithsonian Institution, 1865)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1968)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1980)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1986)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1989)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1993)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1997)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 2002)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1853)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1863)

Smithsonian year : annual report of the Smithsonian Institution for the year ended Sept. 30 ... - Smithsonian Institution (For sale by the Supt. of Docs., U.S. G.P.O, 1979)

Snake venoms, an investigation of venomous snakes with special reference to the phenomena of their venoms - Noguchi, Hideyo, 1876 -1928 (Carnegie institution of Washington, 1909)

Snake venoms; an investigation of venomous snakes with special reference to the phenomena of their venoms - Noguchi, Hideyo, 1876 -1928 (Carnegie Inst, 1909)

The snakes of Australia; an illustrated and descriptive catalogue of all the known species - Krefft, Johan Ludwig Gerhard 1830 -1881 (T. Richards, government printer, 1869)

The snakes of Ceylon - Abercromby, A. F. (Murray, 1910)

The snakes of the Philippine Islands - Taylor, Edward Harrison, 1889 -1978 (Bureau of Printing, 1922)

Societas entomologica - International Entomological Society. (A. Kernan [etc.], 1902)

South-African butterflies ; a monograph of the extra-tropical species - Bowker, James Henry. (Trubner, 1887)

The South American herpetofauna : its origin, evolution, and dispersal - Herpetologists League. (Museum of Natural History, University of Kansas, 1979)

Spolia zeylanica - Colombo Museum (Colombo Museum, 1903)

Spolia zeylanica - Colombo Museum (Colombo Museum, 1910)

Spolia zeylanica - Colombo Museum (Colombo Museum, 1912)

The standard natural history - Kingsley, J. S. (John Sterling), 1854 -1929 (S.E. Cassino and company, 1885)

Structural and systematic conchology: an introduction to the study of the Mollusca... - Tryon, George W., (George Washington), 1838 -1888 (The author, 1882)

Structural and systematic conchology: an introduction to the study of the Mollusca... - Tryon, George W., (George Washington), 1838 -1888 (The author, 1884)

The student's natural history - Baird, William, 1803 -1872 (C. Griffin, 1863)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and Co., ltd, 1905)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and co, 1898)

A student's text-book of zoology - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (S. Sonnenschein and Co., ltd, 1932)

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

Supplément au dictionnaire de l'Académie, ainsi qu'a la plupart des autres lexiques français, contenant les termes appropriés aux arts et aux sciences et les mots nouveaux consacrés par l'usage (Masson, 1827)

Sur la flore de la Serra do Itatiaya au Brésil - Dusén, P. (Per), 1855 -1926 (Imprensa Nacional, 1905)

Synonymia botanica locupletissima generum, sectionum vel subgenerum ad finem anni 1858 promulgatorum : In forma conspectus systematici totius regni vegetabilis schemati Endlicheriano adaptati - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Sumptibus T. Fischer, 1870)

A synonymic catalogue of diurnal Lepidoptera. Supplement, March, 1871-June, 1877 - Kirby, W. F. (William Forsell), 1844 -1912 (J. Van Voorst, 1877)

A synonymic catalogue of diurnal Lepidoptera - Kirby, W. F. (William Forsell), 1844 -1912 (J. Van Voorst, 1871)

Synopsis des familles, genres et espèces des reptiles écailleux et des batraciens de Madagascar - Mocquard, Francois. (Masson, 1909)

Synopsis methodica molluscorum generum omnium et specierum earum, quae in Museo Menkeano adservantur : cum synonymia critica et novarum specierum diagnosibus - Menke, Karl Theodor, 1791 -1861 (G. Uslar, 1830)

Synopsis methodica molluscorum generum omnium et specierum earum, quae in Museo Menkeano adservantur : cum synonymia critica et novarum specierum diagnosibus - Menke, Karl Theodor, 1791 -1861 (sumtibus Georgi Uslar, 1830)

Synopsis of the classification of the animal kingdom - Nicholson, Henry Alleyne, 1844 -1899 (W. Blackwood, 1882)

Synopsis of the contents of the British Museum - British Museum (printed by Woodfall, 1837)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, 1838)

Synopsis of the contents of the British Museum - British Museum (printed by G. Woodfall, 1839)

Synopsis of the contents of the British Museum - British Museum (printed by G. Woodfall, 1838)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, Angel Court, Skinner Street, 1840)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, Angel Court, Skinner Street, 1840)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, 1835)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, 1832)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, Angel Court, Skinner Street, 1836)

Synopsis of the contents of the British Museum - British Museum (printed by G. Woodfall, 1832)

Synopsis of the contents of the British Museum - British Museum (Woodfall, 1842)

Synopsis of the contents of the British Museum - British Museum (Woodfall, 1841)

A synopsis of the family Naiades - Lea, Isaac, 1792 -1886 (Blanchard and Lea, 1852)

A synopsis of the family of Naiades - Lea, Isaac, 1792 -1886 (Carey, Lea and Blanchard, 1836)

A synopsis of the family of Naiades - Lea, Isaac, 1792 -1886 (Carey, Lea & Blanchard, 1838)

A synopsis of the family Unionidae - Lea, Isaac, 1792 -1886 (H.C. Lea, 1870)

A synopsis of the family Unionidae - Lea, Isaac, 1792 -1886 (H. C. Lea, 1870)