It's concise, portable, and has the essence of what you need to know about periodicals, except for instructions about using the Web version of the catalog. Magazines , journals , and newspapers are different types of periodicals.
All periodicals are serials, publications issued at regular intervals.
However, periodicals are generally defined as serials that are published at least 3 times a year. Articles are relatively short and current compared to books. They invite thoughtful, critical response from an audience of peers, which may in turn publish research that refutes or concurs with new findings. A collection of articles on a particular issue may be seen as a scholarly dialogue without boundaries of time or space. Some kinds of periodicals are more useful for research than others because of their intended audience, editorial policies, and level of scholarship.