::The reasoning, if there is such, is that a user reads the title and determines immediately that it is in a specific language rather than looking at the end, in the last "tracings" which is the formal term for the entries. They are usually set up to provide relevant information first and that is usually author, title (and language used is considered here), place, publisher and date. The page number, ISBN locator are all considered secondary and palced at the end of the bibliographic record. FWIW   .