Publications are often publications other than books, which are divided into periodical publications and irregular publications, and some belong to the category of books such as magazines. Including newspapers, miscellaneous publications, special issues, electronic publications, etc. According to its distribution object, it can be divided into internal distribution and public distribution.
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A publication refers to a published product with a certain material form, which stores knowledge and information for the purpose of communication. According to the regulations of UNESCO, publications in a broad sense include periodical publications and irregular publications. Periodical publications are divided into newspapers and magazines (also called periodicals), and occasional publications are mainly books (including books, teaching materials and pictures).
According to the regulations of UNESCO, publications in a broad sense include periodical publications and irregular publications. Periodical publications are divided into newspapers and magazines (also called periodicals). Periodical: newspapers and magazines; Newspapers are divided into daily newspapers and non-daily newspapers by time. Daily newspapers are published more than 4 times a week, and non-daily newspapers are published less than 4 times.
Newspapers can be divided into general newspapers whose contents are widely read by the masses and professional newspapers whose contents are specially read by specific objects. Magazines generally include weekly, xunkan, bimonthly, monthly, bimonthly, quarterly, annual and so on. Yearbooks are generally called yearbooks. There are also some magazines that are published irregularly. Irregular: mainly books (including books, teaching materials and pictures).
Books have covers and are bound into volumes. This painting has no cover or binding. Accidental publications mainly refer to books, which are generally synonymous with books, but in statistical work, books are sometimes regarded as the general term of books, textbooks and pictures. Books are generally published irregularly, but some books are published continuously and have a predetermined approximate publication date, which is called series or series.