Кезең-кезеңмен шығарылатын жарияланымдар

Written publication released as a series of issues

A partwork is a written publication released as a series of planned magazine like issues over a period of time. Issues are typically released on a weekly, fortnightly or monthly basis, and often a completed set is designed to form a reference work on a particular topic.

Partwork series run for a determined length and have a finite life. Generally, partworks cover specific areas of interest, such as sports, hobbies, or children's interest and stories such as PC Ace and the successful The Ancestral Trail series by Marshall Cavendish Ltd. They are generally sold at newsagents and are mostly supported by massive television advertising campaigns for the launch. In the United Kingdom, partworks are usually launched by heavy television advertising each January. Partworks often include cover mounted items with each issue that build into a complete set over time. At the time, printing a book was a lengthy process, copies of each section of the book being printed in turn until the work was complete; the sections would then be collated and the print run of books could then be sold. The alternative of selling individual sections as soon as they were printed would enable the printer could gain a steady income while the book was being produced, and potentially increase sales by selling to people who could not afford the upfront cost of a copy of the complete book. In the 19th century, many of Charles Dickens' novels were first published as partworks. For example, The Pickwick Papers was first published in 19 parts, between 1836 and 1837. The Old Curiosity Shop was first published in 88 weekly parts between April 1840 and November 1841. In the mid 20th century, partwork serialized encyclopedias were issued. Publishers soon branched out to other topics, including cookery books and series on gardening and car maintenance.