0141772 



includes periodicals, government documents, industry reports, 

 proceedings of meetings, newspaper articles, films and monographs. 

 Also included are rulings from the Federal Register and patents 

 from the Official Gazette. 



MEDLINE Files 152, 153, 154 



1966-present , 4,687,000 records, monthly updates (U.S. 

 National Library of Medicine, Bethesda , MD) . 



MEDLINE (MEDLARS onLINE), produced by the U.S. National 

 Library of Medicine, is one of the major sources for biomedical 

 literature. MEDLINE corresponds to three printed indexes: Index 

 Medicus, Index to Dental Literature, and International Nursing 

 Index. MEDLINE covers virtually every subject in the broad field 

 of biomedicine. MEDLINE indexes articles from over 3000 interna- 

 tional journals published in the United States and 70 countries. 

 Citations to chapters or articles from selected monographs are 

 also included. 



MEDLINE is indexed using NLM ' s controlled vocabulary MeSH 

 (Medical Subject Headings) . Over 40% of records added since 1975 

 contain author abstracts taken directly from the published 

 articles. Over 250,000 records are added per year, of which over 

 70% are English language. 



NTIS File 6 



1964-present, 1,122,000 records, biweekly updates (National 

 Technical Information Service, [NTIS], U.S. Department of Com- 

 merce, Springfield, VA) . 



The NTIS database consists of government-sponsored research, 

 development, and engineering plus analyses prepared by federal 

 agencies, their . contractor s or grantees. It is the means through 

 which unclassified, publicly available unlimited distribution 

 reports are made available for sale from such agencies as NASA, 

 DDC, DOE, HHS (Formerly HEW), HUD, DOT, Department of Commerce, 

 and some 240 other units. State and local government agencies are 

 now beginning to contribute their reports to the file. 



171 



