fyi: Google search inside this book--Now available in Japanese

Perhaps you've already discovered that books.google.com is a great way to search the content of books for key words (especially books that are poorly indexed or not indexed at all). If this is new to you, take a look at the right sidebar in the picture. As you may know, Google has worked with some major university and public libraries to scan millions of books. Most of them only allow for a limited preview, but that's generallylly enough to find what you're looking for, assuming you've got the book in hand.

Now, at long last, this is available in Japanese! Voila: books.google.co.jp. According to this Asahi Shinbun article, only a few tens of thousands of books are available so far, but it's definitely a step in the right direction.