b'Sears List of Subject HeadingsOnline selling OntarioHistory1945-Use: Internet marketing Dewey: 971.3Online sex OntarioHistory19th centuryUse: Computer sex Dewey: 971.3Online shopping Use For: OntarioHistory1800-1899(19th century)Use: Internet shoppingOntarioHistory20th centuryOnline social networking Dewey: 971.3Use: Social networking Use For: OntarioHistory1900-1999Only child OntarioHistory21st centuryDewey: 155.44; 306.874 Dewey: 971.3Use For: Single childBroader Term(s): Children OntarioPolitics and governmentFamily size Dewey: 971.3Ontario Ontario Provincial PoliceDewey: 917.13; 971.3 Dewey: 363.2Scope Note: May be subdivided like Manitoba Use For: OPP; Police, Provincial; Provincialexcept for History. policeUse For: Canada West; Upper Canada Broader Term(s): PoliceCanadaBroader Term(s): Central Canada Ontario. Royal Commission on Higher EducationOntarioHistory Use: Royal Commission on HigherDewey: 971.3 Education in OntarioOntarioHistory0-1791 OntologyDewey: 971.3 Dewey: 111Use For: BeingOntarioHistory1791-1841 Broader Term(s): PhilosophyDewey: 971.3Narrower Term(s):Family Compact (Canada) OokpikDewey: 970.004OntarioHistory1800-1899 (19th century)Use: OntarioHistory19th OPACs (Online public access catalogs)century Use: Online catalogsOntarioHistory1837-1838, Rebellion Opaque projectorsUse: CanadaHistory1837-1838, Use: ProjectorsRebellion Open access publishingOntarioHistory1841-1867 Geographic Note: May subdivide geographicallyDewey: 971.3 Dewey: 070.5Broader Term(s): Electronic publishingOntarioHistory1867-Dewey: 971.3 Open and closed shopScope Note: Use for materials on the history of Geographic Note: May subdivide geographicallyOntario since 1867, including Dewey: 331.88materials about the effect of Use For: Closed shop; Right to work; UnionConfederation on Ontario. shopBroader Term(s): LaborOntarioHistory1867-1918 Labor contractDewey: 971.3 Labor unionsOntarioHistory1900-1999 Open classroom approach to teachingUse: OntarioHistory20th Use: Open plan schoolscenturyOpen code softwareOntarioHistory1918-1945 Use: Open source softwareDewey: 971.3710'