This volume of Proceedings of the American Society for Information Science is limited to the text of papers accepted and scheduled for presentation at the 1975 meeting. The papers reflect the need to address and define issues in national information policy, and they examine the current state of federal-level planning and funding of information systems. Contributed papers are categorized in the following manner: (1) information transfer mechanisms and phenomena; 2) library networks; 3) communication and classification theory; 4) user psychology; 5) library management; 6) education and careers in information science; 7) retrieval vocabularies: indexing, switching mechanisms, and text manipulation; 8) planning national and international systems, extending the application of technology, and using micromedia; 9) the future of information services and systems; 10) clustering and discrimination techniques and secondary sources; 11) using on-line retrieval services; and 12) applications in biology and chemistry. In all, 80 papers are included. (CH)