Nonfiction books. Usually reference books like textbooks or research books.
Text books
The indexes in the library catalogue help users find the books they need quickly and easily.
There are indexes that cut across industries; there are indexes that deal with one industry only. Indexes include varying numbers of stocks.
You might be a librarian. Librarians generally try to find information from books or other places quickly for their patrons. That is why indexes in books are so important.
Shigenori Baba has written: 'Union index of books in the field of documentation' -- subject(s): Documentation, Indexes, Information science
text books
"Which kind of books is..." The verb has to agree with kind in number. It is a bit odd sounding to say "kind of books"...not wrong just odd. It seems to emphasize that you expect more than one type in the kind. You more often hear "Which kind of book is..."
Dow Jones Indexes was created in 1882.
what are the most commonly used price indexes
Because
Otto. H. Spohr has written: 'Recent indexes to Africana books' -- subject- s -: Bibliography, Indexes
Eloise Rue has written: 'Subject headings for children's materials' 'Subject index to books for intermediate grades' -- subject(s): Bibliography, Children's literature, Indexes, Readers, Subject Catalogs 'Subject index to readers' -- subject(s): Indexes, Readers, Subject Catalogs