Front Page Titles (by Subject) EFFECTUAL DEMAND, IN REGARD TO ITS INTENSITY. - Definitions in Political Economy
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EFFECTUAL DEMAND, IN REGARD TO ITS INTENSITY. - Thomas Robert Malthus, Definitions in Political Economy 
Definitions in Political Economy (London: John Murray, 1827).
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EFFECTUAL DEMAND, IN REGARD TO ITS INTENSITY.
51. The sacrifice which the demanders must make, in order to effectuate the continued supply of a commodity.