Relationships between cotton export sales and export shipments are examined, and a quarter-specific lag structure is estimated. Two econometric systems are estimated, one employing export shipments and the other using export sales. Results indicate that sales are more sensitive to changes in...

This study estimates import demands for U.S. fresh grapefruit in Japan, France, Canada, and the Netherlands. Historically, these nations have imported about 90 percent of U.S. grapefruit exports. Four import demand functions were specified and estimated by joint generalized least squares based...

Some believe Panama Canal toll rates will increase dramatically as Panama's sovereignty over the Canal becomes complete at the end of this century. This paper focuses on the ability of Panama Canal management to extract additional toll revenues from United States grain traversing the Canal and...