Today I met with a Ph.D. candidate to help her with some research. She needed to find all the qualitative methodology books published in the last ten years. After chatting about her project, I discussed subject headings, how to find them, and how to use them, and searching in WorldCat. I explained that there will be thousands of books, and she would probably need to talk to her professor about how it should be narrowed down. But she can at least have an easy time populating the list by just exporting results into RefWorks!