How many editions of the Amiga RKMs were published by C=?

[psxphill]

There is Libraries, Includes and Autodocs and Hardware in the 3rd edition.

There is also http://books.google.co.uk/books/about/Amiga_user_interface_style_guide.html?id=5sxQAAAAMAAJ
 

I do believe there was an AmigaDOS manual earlier but I don't know if it was officially part of the RKRMs.

The AmigaDOS manual was published by bantam, the last edition covered 2.04.