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consists primarily of contributions to National Intelligence Estimates (NIE) and National Intelligence Surveys (NIS) and, to a lesser extent, publications of the Office of Current Intelligence and various USIB committees. Research in the second category--papers in response to specific requests--may be issued in typescript solely to the requestor or may be published for general distribution. Research publications in the third category are designed primarily to fill important gaps in intelligence and to add to the basic knowledge of the Office, the intelligence community, and policy makers. Research in this third category is selected, in part, on the basis of suggestions from other components of the Agency and from other parts of the intelligence community. Reports in all of these categories have been published throughout the period of OSI's existence and can be generally characterized as progressing from informal memoranda and periodicals of limited subject coverage such as the Epidemiology Bulletin of the early OSI era to the much more formal, coordinated intelligence publication of today, such as the Scientific and Technical Intelligence Report.
OSI production can be further characterized by three, more important categories--the basic or depth reporting as exemplified by the Scientific and Technical Intelligence
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