This study describes the use and value of the major information products and services provided by the Defense Technical Information Center (DTIC). These products and services include technical report distribution on an on-demand basis and through the Automatic Document Distribution (ADD) program; secondary information dissemination through online searching of the Technical Reports (TR) database, Current Awareness Bibliographies (CAB), and Technical Abstract Bulletins (TAB); and provision of management information from three managment databanks--the R&D Work Unit Information System (WUIS), the R&D Program Planning Data Base (R&DPP), and the Independent Research and Development Data Base (IR&D). Results of telephone surveys of approximately 450 DTIC users indicate that in 1982 there were 12.4 million readings of Department of Defense (DoD) technical reports identified through various channels including online searching of the TR database, use of CAB, and use of TAB; and that there were about 14,000 users of the management databanks. Expressed in terms of willingness to pay for its products and services, the value of DTIC to the user is indicated as $367 million, while its value to the funders, expressed in terms of savings resulting from reading of DoD technical reports, is estimated at $37.5 billion. An executive summary, sample questionnaires, and a list of responses to open-ended questions are provided. (ESR)