We all know we can dupe the special books. Now I have 20 books I can't use. How do I activate these special books?

Edit: I have dropped them and attempted to activate by picking them up, but they just go into my inventory. I have picked up a number of the ones I duped and they functioned properly. I added them to my stats successfully. Idk, weird right?

If I had to guess, each book, when activated, will add a perk to your character. Duping the books would do nothing in that case, since 20 copies of the same book would only give your the same perk.

Drop them all on the ground. Pick them up. It is the act of picking up the book that activates the SPECIAL selection. That's... what you were asking, right?

Don't think the bonuses stack in that case where each unique book gives you that perk once. as a bonus.