Bharat Hazari 
The Pure Theory of International Trade and Distortions (Routledge Revivals) [PDF ebook] 

First published in 1978. This book provides a simple, systematic, yet rigorous treatment of the key aspects of the pure theory of international trade and distortions. The opening chapter presents the standard two-factor, two-commodity barter model of international trade and a comprehensive treatment of the important properties and relationships. The rest of the book consists of four sections: parts One and Two are devoted to an analysis of factor market imperfections, and Parts Three and Four consider the trade-theoretical consequences of product market imperfections. A concluding chapter presents some generalised theorems. This book would be of interest to students of economics.