wee NU CLE AR Nucleor Science Abstracts, a semimonthly journal that provides SCIENCE international literature on nuclear science and technology, is a major publication of the U. § Atomic Energy Commission, Division of Technical Information. It covers (1) research reports of the U. S. Atomic Energy Commission and its contractors; (2) research reports of other government agencies and their contractors, universities, and industrial research organizations; and (3), on @ worldwide basis, translations, patents, conference the only comprehensive abstracting and indexing coverage of the : AR STR ACT 5 papers and proceedings, books, ard articles appearing in technical and scientific journals, indexes covering subject, author, corporate author, and report number are included in each issue, Semiannual, annual, and multi-year cumulations of these indexes provide s detailed and convenient key to the world’s nuclearliterature. NSA is avaiteble on subscription from the Superintendent of Documents, U. S. Government Printing Office, Washington, 0. C. 20402, at $42.00 per year for the semimonthly abstract issues and $38.00 per year for the cumulated-index issues. Subscriptions are postpald within the United States, Canada, Mexico, and most Central and South American countries. Postage is not paid for Argentina, Brazil, Guyana, French Guiana, Surinam, and Gritish Honduras, Subscribers in these countries and in al! other countries throughout the world should remit $52.50 per year for the semimonthly abstract issues and $47.59 per year for the four cumulated- index issues. NSA 1s also avaliable on an exchange basis to universities, research Institutions, Industriat firms, and pubtishers of scientific information; inquirles regarding tha exchange provision should be directed to the Division of Technical Information Extension, U. S$. Atomic Energy Commission, P. O. Box 62, Oak Ridge, Tennesses 37830, ad oS pa ee w de ‘ + nok Pa By a hee pe oo ED pet OE wee gk awe Set et tua ‘ 7 . “ He Nw wf 4 Pe re Me t a se . eee 8

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