A Dictionary of American Authors
Oscar Fay Adams
Geometry in Art and Architecture
Paul Calter
The Tesla High Frequency Coil: Its Construction and Uses
George Francis Haller
Digitalisierung in Der Praxis
Axel Uhl & Stephan Loretan
The Python Master
Robert Smallshire & Austin Bingham
Der Magnetmotor: Freie Energie selber bauen
Patrick Weinand-Diez & Sonja Weinand