Over 20 papers presented at a meeting in Montecito, CA, December 1988, discuss data accuracy for geographic information systems used in ecology, marketing, and other fields. They draw from a wide range of physical and human systems, taking approaches that vary from statistical to descriptive. Both a review of existing knowledge, techniques, and experience, and an analysis of critical research needs in the area of spatial data handling. Librarians and other related professionals identify issues involved in obtaining the resources and materials desired by library users and review concepts and projects in resource sharing. Highlights include a discussion of collection access and document delivery, and a view of how technology affects relations between publishers, libraries, and vendors. No index. Annotation copyright by Book News, Inc., Portland, OR