Relatively recent developments, ranging from microfilm catalogs to networked circulation systems, have the potential of removing much of the uncertainty from the routing of interlibrary loan requests. The opportunity of purchasing location and availability information changes the performance of a model interlibrary loan network. Data collected in…

The World Bank, a specialized agency of the United Nations, is devoted to promoting the economic development of its member nations. Its photo library, with a collection of nearly 25,000 black-and-white photographs and color slides, serves as a resource center for various activities of the Bank and other organizations. Intended as a background…