no Akaviri achievement for learning the style for now?

if it isn't changed I suppose Sirinsidiator's method for registering known books will come in handy for some of us.
id range for akaviri books: (first one is the full book and the 14 following ones are the chapters in English alphabetical part order : axe,belt,boots etc...)
57590 to 57604
crown : 64554

and ancient orc :
achievement id :
1341
books ids :
69527 to 69541
crown : 69542

i've seen the mercenary style mats at the station too :
no achiev?
books from 64614 to 64628
crown : 64730

and while i'm at it:
yokudan : 57605 to 57619
crown : 64555

Edit, IsItemLinkBookKnown() works fine for the chapters but for the full book (aka 57590, 69527, 64614, 57605 and their crown counterparts) we have to count if the 14 chapter are known or not because the function return false always. (tested with dwemer style as it is the only one I found in the crown store on PTS)