International agricultural trade now exceeds one trillion dollars. It is one of the key factors in the world economy, and the United States, like many other countries, depends on it to keep food prices reasonable, our balance of payments healthy, and the dollar from collapsing on the international money exchanges. The Symposium on International Trade and Agriculture held at Tucson, Arizona, in April 1977, covered all major topics of trade and commerce policy as they relate to agriculture. The papers presented in this book reflect the major concerns of outstanding professional economists and a great variety of agricultural research organizations.