How do you ____find___ a book in the library ? You ___should____ look in the card index . These cards ___show___ the subject. They are in alphabetical _____order_____. These are two sets of cards in the ____library___ . One is authors and the other is ____titles_____. If you know both the author's name and the title of the book, you can find ___it___ very easy . If the book isn't on the shelf , ask the _____librarian____ to get it for you