1. Abstract
One of the best ITC related teachbooks I ever bought is "Nachrichten aus dem Jenseits" written by Herbert Josef Spirik and Horst Rudolf Loos. In fact this is the only book I ever knew that handles ITC from an engineer's point of view. Both authors are electronic engineers and the whole book is a startling practical work with lots of experiments and also some hypothesis about the nature of ITC. If I had to move to an island where I'd just be allowed to take one book with me, this would be my choice.
A whole chapter (5.5) is dedicated to the works of Dr. Ing. Franz Seidl, a