This man introduced the concepts of elasticity of demand, consumerÕs surplus, quasi-rent and the representative firm in his magnum opus.
This man introduced the concepts of elasticity of demand, consumerÕs surplus, quasi-rent and the representative firm in his magnum opus. He also introduced time as a factor into analysis, thus reconciling the ideas of Adam Smith with the Austrian sch  ool. FTP, name this author of Principles of Economics, a British economist of the early twentieth century.
This man introduced the concepts of elasticity of demand, consumerÕs surplus, quasi-rent and the representative firm in his magnum opus.
Alfred Marshall