Table of Contents

Sweet potato production systems in the Dominican Republic: a comparison of two agroecological zones; classification and spatial distribution of rice-based agroecosystems in West Africa; spatial projection of socioeconomic data using geographic information systems: results from a Kenya study in the strategic implementation of a livestock disease control intervention; farmers' organization, research and diffusion of technology; technological change in wheat production in Pakistan: markets behaviour and income dynamics; the relative value of cereal straw fodder in the semiarid tropics of India: implications for cereal breeding programmes at ICRISAT; scope for improvement of small ruminant production in the Sahel; part contents.