Konkordienbuch
The octavo edition Latin text was utilized in a private Latin edition of "The Book of Concord" in 1580. Scholars question whether or not this octavo edition text can be considered the text approved by the Lutheran Church in the 16th century. The official 1584 Latin "Book of Concord" has the quarto edition text as its text of "The Apology of the Augsburg Confession". Another notable feature of the Kolb-Wengert edition is the setting off of "the filioque" of the Nicene Creed in square brackets.