The information on the t.p. of a textbook will state that the item has been accepted as a textbook for a class. This information is transcribed as: Authorized for instructional purposes.
245 00 Sovetskii ugolovnii protsess
... 500 Authorized for instructional purposes.
Recently, books have arrived with the notice that they are instead of by a government committee. These will also get the 500 Authorized for instructional purposes. note.
The words uchebnoe posobie are often on the t.p. These books have not been authorized and are transcribed as a subtitle.
instead of 
by a government committee. These will also get the 500 Authorized for instructional purposes. note.