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I was looking into this myself for a while, and after a week or so of searching, I found a word-for-word translation in the imperial library (I've included the adress at the bottom)
The book apparently says the 'Kva Kvak' is a newsletter sent to members of some kind of club and the second paragraph says something about the newsletter being altered over the internet. Check the site if you don't believe me. I thought that, the book being in the possesion of most Telvanni wizards, that it would have to do with necromancy, but I suppose there's nothing wrong with an easter egg here or there.