Where can I find Defense strengthening in Oberraden?

Defense strengthening can also be found in these cities:

Andernach Bendorf Dortmund Gieleroth Hennef (Sieg) Hundsdorf Hünxe Königswinter Linz am Rhein Mülheim-Kärlich Neuwied Peterslahr Urbach Waldbreitbach

You can also find this in Oberraden:

Everything From Milk Baking Mixtures Cream Stiffener Spreads Savory Food For Diabetics Menus With Meat Fruit Spritzers Filter Coffee Baguette Roll Salt Sticks