"Wirtschaftsgeographie" . . "Economics, economic history and consumer affairs." . . "Wirtschaftsgeographie / Außenwirtschaftstheorie / Theorie." . . "International commerce, marketing and economics." . . . . "Theorie" . . "Außenwirtschaftstheorie" . . "Zonder onderwerpscode: economie." . . "Geography." . . . . . . . . . . . . . . . "The economic geography of trade production and income a survey of empirics" . . . . . . . . . . . . "The economic geography of trade production and income : a survey of empirics" . "The economic geography of trade production and income : a survey of empirics"@en . . . . . . . . "The economic geography of trade, production, and income : a survey of empirics" . "The economic geography of trade, production, and income : a survey of empirics"@en . . . . . . . .