Okay, you are surprisingly quick!
I have tried several books, with different inputs (ISBN/Author/Title/). and in this case the Title "Knast"
Author "joe bausch"
ISBN "9783548374901"
This should be found:
http://www.bol.de/shop/home/sucharti...b-62e7526b466c
But however, i just want to know if you are still interested in "patching" your plugin.
So when you are quite busy, take your time and relax. it is not urgend in any way. Thanks for your quick response