Where are the Alchemist Creation Guide Books sold?

[Linmakana]

I remember they were sold at the Weapon/Armor house in Prontera, but I checked and none of the NPCs had them.
Did they get moved or are they no longer available?

[BreakTheSilence]

You can purchase them inside the building at the bottom left corner of Aldebaran.

Spoiler for Alchemist Guild Building:

You can purchase all the guide book except for the Elemental Potion Creation Guide. You can obtain it by doing the Alchemist's Platinum Skill Quest.

[Linmakana]

Thanks.