Complete texts of presentations and discussions at a 1975 UNESCO symposium on information systems in ongoing scientific and technical research are included in this volume. Forty-five papers were presented in four sessions: (1) ongoing research information in the service of science and science policy; (2) problems in developing and operating information systems; (3) user needs; and (4) value and mechanisms of international exchange. Discussions and/or panel discussions follow each group of presentations. Participant list and author index are provided. Papers and discussions are in English or French, with most of the text in English. (KP)