Beyond: A Tribute To Massimo Scaligero

Die Gabe zu heilen

2017

Finding Rudolf Steiner

2006

The Otherworld

2013

Homeopathy Unrefuted?

2021

The Architecture of Rudolf Steiner

1991

Dr Rudolf Steiner and the Science of Spiritual Realities

1993

The Other Magick

2018

You Can't Kill Meme

2021

Nel silenzio del parco

2025

Queen of the Sun: What Are the Bees Telling Us?‎

2010