What is the main focus of the Readers Guide to Periodical Literature?

The Readers Guide to Periodical Literature primarily serves the purpose of listing recently published articles organized by subject. This resource is invaluable for researchers, students, and anyone seeking information on a wide range of topics covered in periodicals. By structuring the articles by subject, users can efficiently locate relevant material within various fields of interest. This organization facilitates easier access to information, allowing users to navigate scholarly conversations and current trends in different disciplines.

In contrast, the other options focus on resources that do not match the primary function of the Readers Guide. Providing catalog records for children's books, reviewing educational literature, and cataloging books published in the US are more aligned with other types of bibliographic resources or databases, which cater to specific categories of literature rather than the wide-ranging article listings that the Readers Guide offers.