To complete one on Trebonius's missions, you need three books, i have two, but can't find the third, the egg of time. it's supposed to be in some dwemer ruins, but in the place where it is supposed to be, there is only a statue, and no way to enter!!!
If anyone knows what i'm talking about please let me know how to find it!!

the balmora dwemer ruins because this u have to flip swich then u can get in

Look about ten feet or so away from the door (ie, behind you if you're facing the door). You should see a curlicue crank handle on a post. Crank that and hurry to the door, as it shuts quickly.