In order to search books, use the Catalog Search under Research Tools. Under the All Collections heading, you can search by Author, Title, Keyword, Subject, Author / Words in Title, Call number, ISN. After finding the book you search in the online catalog, you need to give attention to its location, call number and status. Location gives you the information about under which collection you can find the information source. Call number gives the exact location of the information source. It is formed with letters and numbers. Call number is given to an information source according to its subject. Status gives information on whether the information source is available or not.