Book excerpt: Extract: This report critically reviews econometrically estimated export demand equations, multiregion world trade models, including nonspatial and spatial price equilibrium models, and trade flow and market share models. Both single- and multiple-product models are treated. The report describes each modeling approach and its distinguishing characteristics, surveys the recent research, identifies technical and empirical problems, and evaluates its contribution to the objectives of agricultural trade modeling. The report ends with an appraisal of the state of the art and recommends directions for future research and modeling work on agricultural trade.