Sense of the Cosmos Scientific Knowledge and Spiritual Truth Scientific Knowledge and Spiritual Truth Needleman Jacob Heftet / 2003 / Engelsk
Gurdjieff Essays and Reflections on the Man and His Teachings Needleman Jacob Heftet / 1997 / Engelsk
Gospel of Philip Jesus, Mary Magdalene, and the Gnosis of Sacred Union Leloup Jean-Yves Heftet / 2004 / Engelsk
