听力原文：W: Sir, you've been using the Online Catalogue for quite a while is there anything I can help you find? M: I've got to write a paper about Hollywood in the 30s and 40s, and I'm really struggling. There are hundreds of books, and I just don' t know where to begin. W: Your topic sounds pretty big. Why don't you narrow it down to something like.., uh... the history of the studios during that time? M: You know, I was thinking about doing that, but more than 30 books came up when I typed in 'movie studios.' W: You could cut that down even further by listing the specific years you want. Try adding '1930s' or '1940s' or maybe u Golden Age'. M: 'Golden Age' is a good idea. Let me type that In...Hey, look, just 6 books came up that time. That's a lot better. W: Oh...another thing you might consider...have you tried looking for any magazine or newspaper articles? M: No, I've only been searching for books. W: Well, you can look up magazine articles in the 'Reader' s Guide to Periodical Literature.' And we do sub- scribe to 'The Los Angeles Times.' You might go through their index to see if there's anything you want. M: Okay. I think I'll get started with these books and then I'll go over the magazines. W: If you need any help, I'll be over at the Reference Desk. M: Great, thank you. The speakers are in a______.