Front Page Titles (by Subject) VARIATIONS OF PRICES AND VALUES. - Definitions in Political Economy
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VARIATIONS OF PRICES AND VALUES. - Thomas Robert Malthus, Definitions in Political Economy 
Definitions in Political Economy (London: John Murray, 1827).
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VARIATIONS OF PRICES AND VALUES.
57. Prices and values vary as the demand directly and the supply inversely. When the demand is given, prices and values vary inversely as the supply; when the supply is given, directly as the demand.