Users can search the articles in four different ways. The main source is the Magazine Article Catalog that covers the Meiji period to the present. It is published every year from Books Kinokuniya and can be found in major Japanese libraries. Second, the Oya Soichi Library Magazine Index System enables users to find over 2,700,000 articles from 1988 to the present. The system is categorized into five different indexes: persons, subjects, keywords, magazines, and writers. In addition, the Magazine Article Catalog CD-ROM has been published every year since 1997. The CD-ROM ranges from 1992 to the present; it is searcheable by topic, keyword, issue date, and genre of magazines. Lastly, the Web Oya Bunko is the newest search engine exclusively for educational institutions. It covers over 2,000,000 articles from 1988 to the present, with subscriptions costing a minimum of ¥12,600 per annum.