http://mises.org/Community/blogs/dp/archive/2009/07/05/economics-in-one-lesson-13-parity-prices.aspx“Parity” Prices 第13章 “等位”价格 SPECIAL INTERESTS, as the history of tariffs reminds us, can think of the most ingenious reasons why they should be the objects of special solicitude. Their spokesmen present a plan in their favor; andenCommunityServer 2008.5 SP2 (Build: 40407.4157)