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Vilfredo Pareto's Manual of Political Economy is a 'classic' study in the history of economic thought for many reasons, the most noteworthy of which include the setting of general equilibrium economics within a choice theoretic framework based on the opposition between tastes and obstacles; the definitive formulation of economic efficiency, including the surplus approach to collective welfare; the technically flawed but nonetheless insightful treatment of path dependence in consumertheory; and the introduction of non-competitive market analysis to the general equilibrium economics. In so doing