Progress on the development of a mathematical model and associated computer programs for use by the Illinois State Library in evaluation and planning of the interlibrary loan (ILL) network is summarized. Pertinent published literature on ILL networks is reviewed in terms of network structure, operations, satisfaction of requests, and costs. A flow…

This study shows strategies which can be used to plan and implement the Canadian National Library's bibliographic data base and the systems which it is to support. The data base would be a subset of a national bibliographic data base which can be brought together in the context of the projected Canadian Library and Information Retrieval Center.…