. . "Business enterprise Technological innovations Study and teaching." . . "Videorecording"@en . . . . "The issues and methods of economics"@en . "The issues and methods of economics" . . "Internet videos"@en . "This program describes economics as the study of choices: the concept of opportunity cost illustrates how society makes choices. Other key topics are the trade-off between efficiency and equity objectives; positive and normative statements; and supply and demand."@en . . . . . . . . . "This program describes economics as the study of choices; the concept of opportunity cost illustrates how society makes choices."@en . "This program describes economics as the study of choices; the concept of opportunity cost illustrates how society makes choices." . . . . . . . . . "Educational films"@en . . . . "Video recordings for the hearing impaired"@en . . . . . . "The Issues and methods of economics"@en . . . . . . . . . . "Films for the Humanities & Sciences (Firm)" . . "Economics Methodology." . . "Ecomonics." . . "International Tele-Film Enterprises." . . "TVOntario." . . "Supply and demand." . . "Economics." . .