Use the library catalog. Most academic libraries now use computerized systems that access not only the college library’s collection but also books and magazines from other libraries available through interlibrary loans. These systems allow you to search for books by author or title. You can use title searches to locate books by subject as well. For example, if you search the title base for the keyword “cohabitation,” you will learn where books with that word somewhere in the title are located in the library’s book stacks. Near these books will be other works on cohabitation that may not happen to have that word in the title. You may also want to search other related key words, such, such as “unmarried couples.”