The present book is an introduction to Development Economics, International Economics, and elementary Statistics for students of undergraduate courses in Economics in almost all leading universities. It focuses largely on the economics of development of poor countries, and will be highly relevant for understanding various developmental problems-such as poverty, inequality, population growth, problems of capital formation, poor level of HDI-that are faced by the countries of Asia, Africa, Latin America. The book has been written considering the principle of ?comparative advantage? of the two authors. Their individual gains from specialization are expected to stimulate further interest in both Economics and Statistics.