Through state-owned companies and the regulation of private enterprise, the governments of developing countries are increasingly shaping the conditions of world mineral production and trade. Many of the papers in the first of these volumes grapple directly with the meaning of these changes for investment, efficiency and bargaining power. Others focus on specific minerals. The other book is mostly concerned with broader issues. Though prepared for a conference sponsored by three official Arab organizations and the University of Wisconsin, its papers say less about oil than about resources in general.