54 CONSOLIDATED REPORT with the permission of the administration of the PTDC. Subscription can be made in the name of the accused by his relatives or other persons. The number of publications that can be subscribed shall not be limited. Library International Standard National Standard Each institution must have a library available to all categories of prisoners with the books of both entertaining and educational content. All prisoners should be encouraged to use the library1. The persons under investigation, at a certain time of a day, have the right to use the library, the table games, musical instruments, periodicals and literature, procured on the account of the funds available at the controlled temporary cash accounts, as well as religious literature if the positive opinion of the religious expert has been obtained. Familiarization with the library fund in all institutions has shown the sufficient availability of fiction books, legal and religious literature. In the institutions, there are libraries with a number of books accounting to at least 2,000 copies of books. City newspapers are available as periodicals. Books from the library are given upon the request and delivered to the detention cells of the institution, including the local compounds. Religious literature shall be permitted only with the approval of theologians. In the book collections, in addition to the fiction books and specialized literature, there are periodicals in form of national 1. The Nelson Mandela Rules, p.40