Holds that database producers and online system vendors have failed to maintain sufficient quality control over their products, and that online searchers should voice their complaints about file documentation errors, indexing inconsistencies, and incorrect data entries. (FM)

Discusses the developments that have positively or adversely affected abstracting and indexing services over the past several decades, addressing such topics as the impact of computers and the migration from print-on-paper to online information provision. Forecasts for the near and long-term future are made and a reference list is included. (JL)

Surveys the field and literature of geographic information systems (GIS) and spatial data representation as it relates to GIS. Highlights include GIS terms, data types, and operations; vector representations and raster, or grid, representations; spatial indexing; elevation data representations; large spatial databases; and problem areas and future…