Official lists and indexes of names and works in zoology. Supplement 1986-2000 - International Commission on Zoological Nomenclature (International Trust for Zoological Nomenclature, c/o Natural History Museum, 2001)

Öfversigt af Finska vetenskaps-societetens förhandlingar - Suomen Tiedeseura (s.n.], 1895)

Öfversigt af Finska vetenskaps-societetens förhandlingar - Suomen Tiedeseura (s.n.], 1900)

Öfversigt af Finska vetenskaps-societetens förhandlingar - Suomen Tiedeseura (s.n.], 1901)

Oikos= boletín del Centro de Ecología [UNAM] (Instituto de Ecología, UNAM, 2012)

On a new Brazilian spider of the genus Trachelopachys (Araneae, Corinnidae) : with notes on misplaced texa - Platnick, Norman I. (American Museum of Natural History, 1995)

On a third group of flattened ground spiders from Australia (Araneae, Lamponidae) - Platnick, Norman I. (American Museum of Natural History, 2004)

On Brucharachne, the spider that wasn't (Arachnida, Acari, Dermanyssoidea) - Platnick, Norman I. (American Museum of Natural History, 1995)

On Hesperocranum, a new spider genus from western North America (Araneae, Liocranidae) - Platnick, Norman I. (American Museum of Natural History, 1991)

On Melchisedec, a new genus of the spider family Oonopidae (Araneae, Dysderoidea) - Fannes, Wouter (American Museum of Natural History, 2010)

On Nyetnops, a new genus of the spider subfamily Nopinae (Araneae, Caponiidae) - Platnick, Norman I. (American Museum of Natural History, 2007)

On Puan, a new genus of goblin spiders from Argentina (Araneae, Dysderoidea, Oonopidae) - Goblin Spider Planetary Biodiversity Inventory. (American Museum of Natural History, 2012)

On Rastellus, a new genus of the spider family Ammoxenidae (Araneae, Gnaphosoidea) - Platnick, Norman I. (American Museum of Natural History, 1990)

On Teutoniella, an American genus of the spider family Micropholcommatidae (Araneae, Palpimanoidea) - Platnick, Norman I. (American Museum of Natural History, 1986)

On the Australasian ground spider genera Anzacia and Adelphodrassus (Araneae, Gnaphosidae) - Platnick, Norman I. (American Museum of Natural History, 1995)

On the Chilean spiders of the family Prodidomidae (Araneae, Gnaphosoidea), with a revision of the genus Moreno Mello-Leitão - Platnick, Norman I. (American Museum of Natural History, 2005)

On the first African spiders of the family Orsolobidae (Araneae, Dysderoidea) - Platnick, Norman I. (American Museum of Natural History, 1987)

On the first African spiders of the subfamily Molycriinae (Araneae, Prodidomidae) - Platnick, Norman I. (American Museum of Natural History, 2007)

On the first American spiders of the subfamily Sternodinae (Araneae, Malkaridae) - Platnick, Norman I. (American Museum of Natural History, 1987)

On the genera of the spider subfamily Otiothopinae (Araneae, Palpimanidae) - Platnick, Norman I. (American Museum of Natural History, 1999)

On the Micromygalinae, a new subfamily of mygalomorph spiders (Araneae, Microstigmatidae) - Platnick, Norman I. (American Museum of Natural History, 1982)

On the phylogenetic placement of the spider genus Atimiosa Simon, 1895, and the circumscription of Dolichognatha O.P.-Cambridge, 1869 (Tetragnathidae, Araneae) - Dimitrov, Dimitar. (American Museum of Natural History, 2010)

On the power, wisdom and goodness of God, as manifested in the creation of animals, and in their history, habits and instincts - Kirby, William, 1759 -1850 (Carey, Lea & Blanchard, 1836)

On the relationships of the spider genus Cybaeodes (Araneae, Dionycha) - Platnick, Norman I. (American Museum of Natural History, 1992)

On the spider genus Attacobius (Araneae, Dionycha) - Platnick, Norman I. (American Museum of Natural History, 1995)

On the synaphrid spider Cepheia longiseta (Simon 1881) (Araneae, Synaphridae) - Lopardo, Lara (American Museum of Natural History, 2007)

On the tibial and patellar glands, relationships, and American genera of the spider family Leptonetidae (Arachnida, Araneae) - Platnick, Norman I. (American Museum of Natural History, 1986)

On Unicorn, a new genus of the spider family Oonopidae (Araneae, Dysderoidea) - Platnick, Norman I. (American Museum of Natural History, 1995)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank Haak), 1861 -1937 (Frank H. Lattin, 1889)

Opalina : its anatomy and reproduction, with a decription of infection experiments and a chronological review of the literature - Metcalf, Maynard M. (Maynard Mayo), 1868 -1940 (G. Fischer, 1909)

Theophrasti Eresii De historia plantarum libri decem, Graece : cum syllabo generum et specierum, glossario, et notis - Theophrastus. (S. Collingwood, 1813)

The opilionid subfamily Ortholasmatinae (Opiliones, Troguloidea, Nemastomatidae) - Shear, William A. (American Museum of Natural History, 1983)

Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1958)

Optimality, constraints, and hierarchies in the analysis of foraging strategies - Lucas, Jeffrey Robert, 1953 - (1983)

Opuscoli scientifici d'entomologia, di fisica e d'agricoltura - Termeyer, Ramón María, 1737 -1814 (Nella Stamperia del Giornale italico di Carlo Dova, contrada S. Rafaello, num. 998, 1807)

Opuscula subseciva, observationes miscellaneas de animalculis et plantis quibusdam marinis, eorumque ovariis et seminibus continentia - Baster, Job, 1711 -1775 (apud J. Bosch, 1762)

Ornithologia methodice digesta, atque iconibus aeneis ad vivum illuminatis ornata - Lorenzi, Lorenzo. (In Aedibus Mouchianis, 1767)

Our 28th year, 1928-1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Busch Nurseries, Inc, 1956)

Oversigt over det Kongelige Danske videnskabernes selskabs forhandlinger = Bulletin de l'Académie royale des sciences et des lettres de Danemark - Kongelige Danske videnskabernes selskab. (A.F. Høst, 1894)

Oversigt over det Kongelige Danske videnskabernes selskabs forhandlinger = Bulletin de l'Académie royale des sciences et des lettres de Danemark - Kongelige Danske videnskabernes selskab. (A.F. Høst, 1898)

Pacific science - University of Hawaii. (University Press of Hawaii, 1961)

Pacific seabirds : a publication of the Pacific Seabird Group - Pacific Seabird Group. (The Group, 2002)

Palaeontology - Palaeontological Association (Palaeontological Association, 1975)

Palaeontology - Palaeontological Association (Palaeontological Association, 1990)

Palaeontology - Palaeontological Association (Palaeontological Association, 1991)

Palaeontology - Palaeontological Association (Palaeontological Association, 1992)

Palaeontology - Palaeontological Association (Palaeontological Association, 1996)

Palaeontology - Palaeontological Association (Palaeontological Association, 1997)

Paläobiologie der cephalopoden aus der gruppe der dibranchiaten - Abel, Othenio, 1875 -1946 (G. Fischer, 1916)

Paläobiologie der Cephalopoden aus der Gruppe der Dibranchiaten - Abel, Othenio, 1875 -1946 (G. Fischer, 1916)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1956)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1964)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1966)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1967)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1969)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1972)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1973)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1976)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1977)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1978)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1979)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1980)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1981)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1982)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1983)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1985)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1986)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1988)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1989)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1990)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1991)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1993)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1995)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1996)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1998)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1999)