Touch database and books on reader

I want to generate a list of books that are on my touch (Home->Library->Books) by what is in the database.

Looking at the "contents" table it looks like I want to look at entries where ContentType=6, but this returns A LOT of stuff that doesn't show up in the Home->Library->Books.

I'm not seeing any other fields that indicate whether a book is "active". Anyone have a SELECT statement that will only show "active" books? FWIW, I'm on 2.1.1

Thanks.