character: Paul Samuelson
topic: Welfare Economics and Elasticity
grade: 12
subject: Economics
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character: Alfred Marshall
topic: Elasticity of Demand
grade: 12
subject: Economics
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character: Arthur Pigou
topic: Externalities and Welfare Economics
grade: 12
subject: Economics
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character: John Hicks
topic: Consumer Theory and Welfare
grade: 12
subject: Economics
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