Even though Persian wikibooks already has some of name spaces but it lacks many usable ones. Name spaces of "Wikijunior", "Cookbook", "Subject" and their related "talk" pages. Persian equivalents can be "ویکیکودک" and "کتاب آشپزی" and "موضوع" for "Wikijunior", "Cookbook", "Subject" name spaces, respectively.
URL: fa:b:ویکیکتاب:میز تحریر#اضافه نمودن فضای نام موضوع (Subject)