Where to obtain Velishoul's Tome 108/109

[rixardion]

For those enchanters out there who have had these pages drop, I would like to know if you remember where you were.

I know all research components are supposed to be dropped by level appropriate mobs but I'm not totally sold on that fact. Since we have no way of actually checking the loot tables to ensure the components will ever drop from any particular mob, I've come here to ask your experiences in finding said pages. These two seem ridiculously rare compared to the rest of the pages I've encountered so far.

Edit: I realize that page 108 is actually faded when looted.