The study aimed at linking geographic information systems and their use in library and information science, as they represent spatial and geographical information represented in processing in machine-readable cataloging (MARC) fields, which are represented in the Resources Description and Access in the form of an internationally agreed drawing or scheme, and geographic information is of interest to a wide range of beneficiaries in various fields, and to develop work in the field of libraries and information in light of the rules for characterization and availability of resources and in view of the lack of previous studies dealing with this topic; It was necessary to think about good planning to equip libraries and information centers at a high level so that they would be able to deal with information sources and the correct representation of geographical data through geographic information systems, the study was keen to apply the standards of the analytical and applied approach where all the appropriate fields to represent data geographically are reviewed. and the application of the appropriate subfields to it, the study reached the possibility of using the field 651 specifically and activating the hyperlink feature through it to display more links that include drawings, maps, data, and vital statistics associated with it, and thus the field 651 turns into an interactive feature to display bibliography, geography and information data with linking to all Pages and links via the Internet or in full-text databases as well as abstract databases, and innovative addition to the performance of field 651 to become a descriptive field and a tool for geographical and informational representation at the same time.