Category:C-Class vital articles
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Subcategories
This category has the following subcategory, out of 2 total.
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Pages in category "C-Class vital articles"
The following 200 pages are in this category, out of approximately 18,770 total. This list may not reflect recent changes.
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- Talk:Oogenesis
- Talk:Oomycete
- Talk:Opal
- Talk:Open fracture
- Talk:Open science
- Talk:Open set
- Talk:Open world
- Talk:Open-pit mining
- Talk:Open-source software
- Talk:OpenGL
- Talk:Openness to experience
- Talk:Operating system
- Talk:Operating theater
- Talk:Operation Condor
- Talk:Operation Market Garden
- Talk:Operation Torch
- Talk:Operations research
- Talk:Operator (mathematics)
- Talk:Operator overloading
- Talk:Operator theory
- Talk:Operetta
- Talk:Ophelia (painting)
- Talk:Ophiuchus
- Talk:Ophthalmology
- Talk:Ophthalmosaurus
- Talk:Max Ophüls
- Talk:Amelia Opie
- Talk:Opinion poll
- Talk:Opisthokont
- Talk:George Oppen
- Talk:Opportunity (rover)
- Talk:Oppositional defiant disorder
- Talk:Oppression
- Talk:Optic nerve
- Talk:Optical coating
- Talk:Optical computing
- Talk:Optical disc
- Talk:Optical illusion
- Talk:Optical isolator
- Talk:Optical spectrometer
- Talk:Optical telescope
- Talk:Optometry
- Talk:Oracle
- Talk:Oracle machine
- Talk:Oral history
- Talk:Oral hygiene
- Talk:Oral rehydration therapy
- Talk:Oran
- Talk:Orange (colour)
- Talk:Orange Free State
- Talk:Orange Is the New Black
- Talk:Orange juice
- Talk:Orange Revolution
- Talk:Orange River
- Talk:Orangery
- Talk:Orb-weaver spider
- Talk:Viktor Orbán
- Talk:Orbit
- Talk:Orbital eccentricity
- Talk:Orbital hybridisation
- Talk:Orbital inclination
- Talk:Orbital spaceflight
- Talk:Orbital station-keeping
- Talk:Orchestra
- Talk:Orchestration
- Talk:Orchid
- Talk:Order (biology)
- Talk:Order of Assassins
- Talk:Ordered pair
- Talk:Ordet
- Talk:Oregano
- Talk:Francisco de Orellana
- Talk:Oresteia
- Talk:Carl Orff
- Talk:Organ (biology)
- Talk:Organ printing
- Talk:Organic acid
- Talk:Organic aquaculture
- Talk:Organic compound
- Talk:Organic reaction
- Talk:Organic synthesis
- Talk:Organization
- Talk:Organization for Security and Co-operation in Europe
- Talk:Organized crime
- Talk:Organochlorine chemistry
- Talk:Organometallic chemistry
- Talk:Organon
- Talk:Organophosphorus chemistry
- Talk:Organosulfur chemistry
- Talk:Orient
- Talk:Orient Express
- Talk:Orientability
- Talk:Oriental garden lizard
- Talk:Oriental Orthodox Churches
- Talk:Oriental pied hornbill
- Talk:Oriental Shorthair
- Talk:Orientalism
- Talk:Orientalism (book)
- Talk:Orienteering
- Talk:Origami
- Talk:Origin myth
- Talk:Origin of language
- Talk:Origin of speech
- Talk:Origin of the Moon
- Talk:Original sin
- Talk:L'Origine du monde
- Talk:Origins of the American Civil War
- Talk:Orinoco
- Talk:Orion's Belt
- Talk:Orisha
- Talk:Vittorio Emanuele Orlando
- Talk:Orlando: A Biography
- Talk:Orléans
- Talk:Ornament (music)
- Talk:Ornithocheirus
- Talk:Ornithomimosauria
- Talk:Ornithomimus
- Talk:Orogeny
- Talk:Oromia
- Talk:Oromo language
- Talk:Orontes River
- Talk:Orphan
- Talk:Orphanage
- Talk:Hans Christian Ørsted
- Talk:José Ortega y Gasset
- Talk:Daniel Ortega
- Talk:Abraham Ortelius
- Talk:Orthodontics
- Talk:Orthodox Judaism
- Talk:Orthoptera
- Talk:Orthotics
- Talk:Manuel Ortiz Guerrero
- Talk:Tito Ortiz
- Talk:Sherry Ortner
- Talk:Oryza
- Talk:Osaka
- Talk:Osaka University
- Talk:Hiroshi Ōshima
- Talk:Nagisa Ōshima
- Talk:Oshin
- Talk:Osiris
- Talk:Nakkaş Osman
- Talk:Osogbo
- Talk:Mariano Ospina Rodríguez
- Talk:Ossetian language
- Talk:Ossicles
- Talk:Carl von Ossietzky
- Talk:Joel Osteen
- Talk:Osteichthyes
- Talk:Osteopathy
- Talk:Osteoporosis
- Talk:Ostia Antica
- Talk:Ostracod
- Talk:Ostracoderm
- Talk:Ostrava
- Talk:Ostrogothic Kingdom
- Talk:Ostrogoths
- Talk:Ostsiedlung
- Talk:Wilhelm Ostwald
- Talk:Osun State
- Talk:Otago
- Talk:Otello
- Talk:Other (philosophy)
- Talk:Paul Otlet
- Talk:Ōtomo no Yakamochi
- Talk:Otorhinolaryngology
- Talk:Ottawa River
- Talk:Otter
- Talk:Merlene Ottey
- Talk:Otto IV, Holy Roman Emperor
- Talk:Otto cycle
- Talk:Nicolaus Otto
- Talk:Ottoman Empire
- Talk:Ottonian art
- Talk:Ouagadougou
- Talk:Caroline Ouellette
- Talk:William Oughtred
- Talk:Mohamed Ould Abdel Aziz
- Talk:Oulu
- Talk:Out of Africa
- Talk:Outback
- Talk:Outdoor recreation
- Talk:Outer Banks
- Talk:Outgoing longwave radiation
- Talk:Outkast
- Talk:Outlander (novel)
- Talk:Outlaw
- Talk:Outlaw motorcycle club
- Talk:Output (economics)
- Talk:Outsider art
- Talk:Ovary
- Talk:Oven
- Talk:Ovenbird (family)
- Talk:Over the Rainbow
- Talk:Overhead power line
- Talk:Overijssel
- Talk:Overseas France
- Talk:Overthrow of the Hawaiian Kingdom
- Talk:Richard Owen
- Talk:Robert Owen