1. Sources: i.World Integrated Trade Solution ii) Business and Economic Data for 200 countries iii) The GlobalEconomy.com iv) Agflow-Digitizing Agricultural markets. v)UNCTAD Trains for most favoured Nations and Applied Tariffs on Imports vi) Egypt-Macrotrends.net: Tariffs Rates vii;Tariffs and Levies REFERENCES
2. Trade Liberalization and Revealed Comparative Advantage;B Balassa;Manchester School of Economics and Social Studies,1965
3. The changing pattern of comparative advantage in manufactured goods;B Balassa;In Review of Economic Statistics,1979