where to find the discipline blood rituals?

[TriStaN]

Hi everyone!
I just finished the game (which i really liked), but i recognized, that I never had the discipline blood rituals. Since the very start of the game I wanted to have Christof fighting with prison of ice, call lightning and the summonable elementals. but I never found a tome and I don't know how to learn it without a tome, because I even became a Methusalem without having it at a level up. So, my question: Is there any place in the game where I can find such a tome or any other possibility to have this discipline?

Thx for answers, excuse my English, I'm from Switzerland..

TriStaN

[MT Head]

Haven't been there myself yet, so this is second-hand info from a walkthrough:
After the Vienna clocktower adventure you will get imprisoned, break out of there and then enter some Tremere building - Haus de Hexe.
In this building you fight and kill Vistania, then you enter a laboratory where you find a Tremere Lord.
Somewhere in his vincinity the book should be found. I'm sorry I can't be more specific than this.

[TriStaN]

thx a lot head!