I'd have to go with encyclopedia.
I read the dictionary....the zebra did it
Assuming there's nothing else to do, the encyclopedia. Wider scope of information in a more reader friendly format.
I'd have to take the encyclopedia, at least it would be somewhat interesting!
Dictionary. There'd be hope of finishing it before I die. I read the dictionary for fun sometimes anyway. (I really know how to have fun don't I?)
Encyclopedia ^^