The Deadly Library

When I first landed here, and after the displacement sickness wore off, I was excited. A library! I may not get to read as often as I should, but I still love libraries. There's just something wonderous about them. Especially when it's clear that the books in them are ancient.
 
But hey, I never expected these ancient books to try to eat me! Seriously, beginning to think I'm going to lose this arm after one of the damn things latched on. I barely got it off before it checked clean through the muscle and bone. It is not a pleasant experience.
 
I'm going to guess they are mimic. Question is. How many books in this library are actually books and how many are mimics?
 
Guess there's only one way to find out!