Provides an overview of the development and use of numeric databases, and of the evolution of user charging methods for all online information retrieval systems. The need to provide database users with advance estimates of charges is discussed, and a methodology for charge estimation is presented. (87 references) (CLB)

Examines the role of scientific and technical information in national development in Nigeria and establishes a framework that could enhance the use of this information for development purposes. Factors such as national information policies, government support of research projects, and the role of international organizations in technology transfer…