Index -A cumulative list of periodical articles, arranged alphabetically by subject and by author 's last name. In libraries, periodical indexes may be available in print, on CD-ROM, via the online catalog, or as separate online databases. Also, a list of subjects covered in a book, usually published at the end of the book. Journal - A scholarly periodical devoted to disseminating current information about research and developments in a specific field or subfield of human knowledge. Usually published quarterly.
Most journal articles are longer than five pages and include a bibliography or list of works cited.
Journal articles usually include a paragraph at the beginning, called an abstract, which summarizes the main points of the article Magazine - A popular or general interest periodical containing articles on a variety of topics by different authors. Usually includes color graphics and advertising printed on glossy paper. Most magazines are issued weekly or monthly Periodical - A publication with a distinctive title issued in softcover more than once, usually at regular intervals, without prior decision as to when the final issue will appear. Includes magazines and journals as well as newspapers and newsletters. Libraries usually bind all the issues which appear during a specific calendar year in numbered volumes.