Duplicate books about Glimmerdust?

[DanielCoffey]

While working my way through the books in preparation for Book Covers Enderal, I came across what appears to be a duplicate book in TES5EDIT and I would appreciate knowing which was the "real" one.

Both books have the same contents (the properties of Glimmerdust in the Alchemy tables)...

0007B899 _00E_BookDrugs "Glimmerdust and Its Application"
0011C4CB _00E_BookGlimmerstaubrezepte "Glimmerdust Recipes"

Are they supposed to be two different books or is it a case of a duplication error?

[DanielCoffey]

Consider this thread closed - I have more book naming questions so I will build up a list in the Mods forum under the Book Covers Enderal thread.