I just went to Photoshop with it. There's actually a significant vertical 'strip' of this missing. What Krad000 did was spaced it apart; the white you see is more or less proportionate to the vertical part that's missing.
Then there's a horizontal part that's also missing on the top-right. In PS, I aligned the page numbers unlike Krad000 so the white you see at the bottom-right is actually supposed to be at the top.
Seems it was just a bad scan from the start. Wait for a better one, I guess.