An introduction to the ways in which an information service (library, documentation center, database service provider, etc.) brings together information sources with the people who want to use them. The identification of client information needs, and the provision of information services designed to meet those needs. The range of possible information sources (print, electronic, and other formats); the evaluation of them in relation to client needs; the provision of access to them through various information service strategies. Techniques for eliciting client requirements, at the collective level, through the analysis of community needs, and at an individual level, by means of the reference interview. The relative merits of developing a collection of information resources within a library or information service, or of providing alternative outside access. Planning and budgetary aspects of collection development. The evaluation of information services.