Nothing changes faster in today's libraries than reference services. The purpose of this collection of thirty articles is to help both the beginner and the experienced librarian keep up with that change through the explanations and points of view of leaders in the field. This volume, like the first two (1978 and 1982), brings together in a single, convenient place a representative view of today's reference and information services for students, teachers, and librarians. It can be used alone, or in conjunction with the author's fifth edition of 'Introduction to Reference Work' (McGraw-Hill, 1986, 2 vols.). All of the pieces in this collection are cited in one of those two volumes.