For a paper, one can tell what category it belongs to, by the keywords of the paper and the journal/proceeding where it is published, even though he is totally unfamiliar with the topic of the paper.
I wonder if there are some ways to tell what category a book belongs to?
One cannot look at its content or abstract, not even its title (I put this restriction, because in reality, even does so, if not familiar with the topic of the book, it is still hard to tell what category it belongs to).
The only available information is just any meta information available, either printed in the first few pages of the book or available on some websites that provide such information for categorization.
I also hope to be able to reach as fine category as possible/available.