Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 1992)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 1991)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 1993)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 1994)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 1995)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2001)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2003)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2005)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2007)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2008)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2010)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2014)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2015)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2016)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2017)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2019)

Scopus - East Africa Natural History Society. (East Africa Natural History Society's Ornithological Sub-committee, 2020)

Scopus Special Supplement. Special Supplement - East Africa Natural History Society.

A serological and ectoparasite survey of migratory birds in northeast Africa; final report - Watson, George E. (George Elder),‏ ‎ 1931 - (Dept. of Vertebrate Zoology, Smithsonian Institution, 1972)

Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Abt. 1, Mineralogie, Botanik, Zoologie, Anatomie, Geologie und Paläontologie - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Commission bei Carl Gerold's Sohn, 1863)

Sitzungsberichte und Abhandlungen der Naturwissenschaftlichen Gesellschaft Isis in Dresden - Gesellschaft Isis in Dresden. (Warnatz & Lehmann, 1883)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1912)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1943)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1942)

Some birds of the Canary Islands and South Africa - Harris, Henry E. (R.H. Porter, 1901)

Some Chinese vertebrates ... - Bangs, Outram, 1862 -1932 (Printed for the Museum, 1912)

South African journal of natural history - South African Biological Society. (South African Biological Society, 1918)

South African journal of natural history - South African Biological Society. (South African Biological Society, 1921)

Souvenirs d'un voyage dans l'Inde exécuté de 1834 à 1839 - Bury, Priscilla Susan, 1799 -1872 (Fortin, Masson et cie [etc.], 1843)

Spaziergänge eines naturforschers - Marshall, William, 1845 -1907 (A. Seemann, 1898)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1972)

Spicilegia zoologica : quibus novae imprimis et obscurae animalium species iconibus, descriptionibus atque commentariis illustrantur - Pallas, Peter Simon, 1741 -1811 (Prostant apud Gottl. August. Lange, 1774)

Sterling seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Northrup, King & Co, 1905)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1872)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1874)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1875)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1876)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1877)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1878)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1879)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1880)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1887)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1888)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1873)