I'd love to be able to mark a book as "read" without counting all its pages as in my "pages read" statistic.

A number of the books I read have pages I use as reference when needed (think maps, glossary pages, multiple pages of contributor bios in anthologies, several pages of endnotes and citations in academic books) but don't actually read front-to-end. When I finish these books and mark them as "read", those pages I didn't read get included in my pages read stats. Could you please introduce a way to mark say a 300-page book as "read" without counting all 300 pages as read?