Dairatul Maarif, the institute for preservation of Arabic manuscripts in Osmania University, has launched a descriptive catalogue of its centuries-old rare Arabic books and manuscripts. The 375-page catalogue lists 300 books procured from world over, preserved and translated into English, officials said. The institute has a rare collection of works on Islam, Sufism, tradition, astronomy, ecology, mathematics, philology, dogma, metaphysics, medicine among others. The catalogue has also been uploaded on the institute’s website to provide easy access to scholars the world over. The collection of books and manuscripts are from Germany, Britain, Turkey, Yemen, Saudi Arabia, France among other countries.