Discusses the theory behind the system of the compact disc (encoding process, decoding system), its potential for growth, and its possible impact on the way libraries handle sound recordings. Guidelines for purchase of compact disc equipment are given. A comparison of compact discs and long-playing records is appended. (37 references) (EJS)

Materials in this collection were submitted by respondents to a survey which sought specific data on the numbers and types of approval plans in Association of Research Libraries (ARL) libraries, whether such plans are meeting expectations, their relative importance in the library, who makes the key decisions, and the kind of thought and study that…