The sole right of an author or his heirs to publish a work for a term of years fixed by statute, a book for 42 years, or the author's lifetime and 7 years after, whichever is longer; copyright covers literary, artistic, and musical property. By the Act an author must present one copy of his work, if published, to the British Museum, and one copy, if demanded, to the Bodleian Library, Oxford; the University Library, Cambridge; the Advocates' Library, Edinburgh; and Trinity College Library, Dublin.