Ugly's Electrical References
George V. Hart & Sammie Hart & William C. Buchanan
Die Therapie
Sebastian Fitzek
Electronics: A First Course, Second Edition
Owen Bishop
Große Gefühle
Theo Scherling & Elke Burger
Colloquial German
Dietlinde Hatherall & Glyn Hatherall
Colloquial Series (1)
Colloquial German 2: The Next Step in Language Learning
Annette Duensing
Colloquial Series (2)