INFORMATION IMPLOSION! The ACS Journal Microform Program One of the steps being taken by ACS Publications to reduce new chemical information to manage able proportions is the adoption of microform techniques for storage and publication. We are using both microfilm and microfiche. MICROFILM: Most of the ACS periodical publications are now available on microfilm, 16 mm or 35 mm, negative or positive, open reel or special cartridge. Back issues—back to Volume 1 for many journals—are available. Subscriptions to current volumes also are available; the microfilm is supplied at year's end. Current subscriptions to microfilm editions of journals include a subscription to "hard copy" issues of the journal. Microfilm subscriptions are on a lease basis that specifically grants the subscriber a license to make unlimited numbers of photocopies for internal use. Microfilm editions contain supplementary materials-such as tables, charts, computer printouts, and the like-that are not printed in the regular hard copies. They thus constitute the most complete version of each journal.
MICROFICHE: The supplementary materials which are included at the end of each year in the current microfilm editions of the journals are also available on 105 χ 148 mm negative microfiche cards. Journal users can obtain material supplementary to an article, on microfiche, soon after publica tion by following the ordering instructions given at the end of the article. Microfiche cards containing supplementary material are available on a subscription basis for five journals that have a substantial, con tinuing volume of such material—these five are Journal of the American Chemical Society,
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Journal of Organic Chemistry, Journal of Physical Chemistry, Inorganic Chemistry, and Journal of Chemical & Engineering Data. Most, but not necessarily all, issues of these journals have supplementary material. Microfiche subscrip tions are not available on other ACS publications. Microfilm edition subscribers receive all microfiche cards for the particular journal to which they subscribe and thus do not need to special-order any microfiche cards for that journal. Note: Single issues of journals and entire articles are not available either on microfilm or on microfiche.
Special Issues Sales American Chemical Society 115516th St., N.W., Washington, D.C. 20036
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