Specifically this http://eq2.zam.com/db/item.html?eq2item=a15de8515cac145e0fdc96e940c9db5b#Teaches Doesn't say where you can get it. I'm not sure with this http://eq2.zam.com/wiki/Recipe_Books_(EQ2) if by advanced recipe books, where it lists it tier by tier, if it means this specific book I linked to, or whether it's just the normal advanced recipes- for example, a tier 3 book of 20-30th level armorer recipes would have the steel Master Crafted stuff (I already have all the advanced crafting ones for armorer)
It looks to be a made-up book for the purpose of keeping everything together on the site listing. In-game, each of those items has its own book. They just added their own categories for the purpose of simplifying searches.
Either that or it's a betabuffing bauble. Anyway, you won't find that on a live server. Edit : you won't find any of these recipes in a book, they all come from AoD's research apprentices.
