Project Media Base reports its conclusions and recommendations for the establishment of bibliographic control of audiovisual resources as a part of an overall objective to plan, develop, and implement a nationwide network of library and information services. The purpose of this project was to test the hypothesis that the essential elements of a national bibliographic system for audiovisual informational resources currently exist, and that therefore there is no apparent impediment to a national system. On the assumption that the hypothesis was correct, the project also sought to define functional specifications for such an integrated system of audiovisual resources. The findings stipulate differences between nonprint and print media and their relative reduction to control; present the state of efforts to achieve standards; note the need for mutual cooperation and coordination of audiovisual resources; describe current barriers to a national network; and indicate the existence of essential network elements. Recommendations include the establishment of international liaison, promotion of established cataloging standards, further development of networking study proposals, the expansion of computerized control of audiovisual resources, the utilization of shared cataloging and vendor supplied descriptions, and the dissemination of information concerning current networking activities, their coverage, services, and use. (RAA)