书名原文：International economics.Ⅰ,The pure theory of international trade multinational firms and the theory of international trade the pure theory of international trade 国际经济学．Ⅰ：国际贸易理论．Ⅰ：the pure theory of international trade Financial innovation and economic development of international trade Political economy of international trade 并列题名：Political economy of international trade 并列题名：Financial innovation and economic development of international trade Compilation for the sentence models of international trade 书名原文:The law and practice of international trade