Replies to This Forum

Permalink Reply by Dr. Ghante Pradipkumar on July 12, 2012 at 17:44

R/ Sir,

CODEN – according to ASTM standard E250 – is a six character, alphanumeric bibliographic code, that provides concise, unique and unambiguous identification of the titles ofserials and non-serial publications from all subject areas.

CODEN became particularly common in the scientific community as a citation system for periodicals cited in technical- as well in chemistry-related publications and as a search tool in many bibliographic catalogues.

Contents   [hide]  1 History 2 Current sources 3 Examples 4 See also 5 References 6 External links

[edit]History

The CODEN, designed by Charles Bishop (Chronic Disease Research Institute at the University at Buffalo, State University of New York, retired), was initially thought as a memory aid for the publications in his reference collection. Bishop took initial letters of words from serial titles thereby using a code, which helped him arranging the collected publications. In 1953 he published his documentation system, originally designed as a four digit CODEN system; volume and page numbers have been added, in order to cite and locate exactly an article in a magazine. Later, a variation was published 1957.

After Bishop had assigned about 4,000 CODEN, the four digit CODEN system was further developed since 1961 by Dr. Kuentzel at the American Society for Testing of Material(ASTM). He also introduced the fifth digit to CODEN. In the beginning of the computer age the CODEN was thought as a machine-readable identification system for serials. In several updates since 1963, CODEN were registered and published in the CODEN for Periodical Titles by ASTM, counting to about 128,000 at the end of 1974.

Although it was soon recognized in 1966 that a five digit CODEN would not be sufficient to provide all future serial titles with CODEN, it was still defined as a five digits code as given in ASTM standard E250 until 1972. Within the year 1976 the ASTM standard E250-76 defined a six-digit CODEN.

With beginning of the year 1975 the CODEN system was within the responsibility of the American Chemical Society.

Today, the first four digits of the six-digit CODEN are taken from the initial letters of the words from a serial title, followed by a fifth letter, which consists of the first six letters (A–F) of the alphabet, the latter indicating from which grid the CODEN was taken. The sixth and last digit of the CODEN is a machine calculated check digit of the preceding digits, which is either numerically (2–9) or alphabetically (A–Z). CODEN always uses capital letters.

In contrast to a serial CODEN, the first two digits of a CODEN assigned to a non-serial publication (e.g. conference proceedings) are occupied with arabic numerals each. The third and fourth digit again is occupied with a letter. The fifth and sixth digit corresponds to the serial CODEN, but differs from that the fifth digit is taken from all letters of the alphabet.

In 1975 the International CODEN Service located at Chemical Abstracts Service (CAS) became responsible for further development of the CODEN. The CODEN is automatically assigned to all publications referred on CAS. On request of publishers the International CODEN Service also assigns CODEN for non chemistry-related publications. For this reason CODEN may also be found in other data bases (e.g. RTECS, or BIOSIS), and are assigned also to serials or magazines, which are not referred in CAS.

[edit]Current sources

CODEN assigned till 1966 can be looked up at the two-volume CODEN for periodical titles issued by L.E. Kuentzel. CODEN assigned till 1974 were published by J.G. Blumenthal. CODEN assigned till 1998 and their disintegration can be found at the International CODEN Directory (ISSN 0364-3670), which has been published since 1980 as a microfiches issue.

Finding a current CODEN is now best done with the online database of CASSI (Chemical Abstracts Service Source Index), covering all registered titles, CODEN, ISSN, ISBN, abbreviations for publications indexed by CAS since 1907, including serial and non-serial scientific and technical publications: [1].

CASSI online is the replacement for CASSI als printed serial issue (ISSN 0738-6222, CODEN CASSE2), or as the Collective Index (0001-0634, CODEN CASSI6). CASSI will no longer be published in print. Only the CD-ROM issue of CASSI (ISSN 1081-1990, CODEN CACDFE) will be published furthermore.

Source :_ http://en.wikipedia.org/wiki/CODEN 

Ghante P.B.

Librarian

SKNSBS

• ▶ Reply