Where can I find Three-grain bread in Radolfzell am Bodensee?

Three-grain bread can also be found in these cities:

Allensbach Constance Diessenhofen Engen Kreuzlingen Müllheim Rielasingen-Worblingen Singen (Hohentwiel) Steckborn Stein am Rhein Stockach Thayngen Tägerwilen Überlingen

You can also find this in Radolfzell am Bodensee:

Pumpernickel Breakfast Cereals Tri-Grain Toast Hair Care Body Lotion Cold Remedies Window Cleaner Large Equipment Cleaner Whole Wheat Toast Candy