Areal data have been used to good effect in a wide range of sociological research. One of the most persistent problems associated with this type of data, however, is the need to combine data sets with incongruous boundaries. To help address this problem, we introduce a new method for identifying common geographies. We show that identifying common…

Discusses the problem of duplicate citations resulting from file overlaps in multidatabase searching and shows that such duplicates could be identified automatically and eliminated by a host computer as a complementary service to online retrieval. Steps involved in the realization of this service are described, and 11 references are listed. (RBF)

The automated identification of students as they progress through an instructional program is described as an essential capability of the Southwest Regional Laboratory's (SWRL) Instructional Management System (IMS). Performance characteristics of procedures for linking data to individual students (whose records are maintained by IMS) are…