However, depending on what kind of information you're looking for, there are several resources that might be helpful:
For finding specific publications:
* Ulrich's Periodicals Directory: This is a comprehensive database that provides information about over 300,000 periodicals worldwide. It includes details like publication frequency, subject coverage, and contact information.
* MasterFILE Premier: This is another popular database that indexes and provides access to articles from a wide range of academic journals, magazines, and newspapers.
For understanding the publishing process:
* The Writer's Digest: This magazine provides guidance on writing, publishing, and marketing, including articles on creating and publishing periodicals.
For specific publishing schedules:
* The websites of individual publishers: Most periodicals have websites that include their publication schedule.
To get a better answer, please clarify your question with these details:
* What kind of periodicals are you interested in? (Academic journals, magazines, newspapers, etc.)
* What information are you looking for? (Publication frequency, subject coverage, publisher information, etc.)
Once you provide these details, I can help you find the most relevant resource for your needs.