"Vehicles of Consciousness; The Concept of Hylic Pluralism (Ochema)", vol I-IV, The Theosophical Society in Netherlands, 1978* Powell, Arthur E. "The Astral Body and other Astral Phenomena"* —, "The Causal Body and the Ego"* —, "The Etheric Double"* —, "The Mental Body"* Samael Aun Weor, "The Perfect Matrimony or The Door to Enter into Initiation".
"Vehicles of Consciousness; The Concept of Hylic Pluralism (Ochema)", vol I—IV, The Theosophical Society in Netherlands, 1978* Powell, Arthur E. "The Astral Body and other Astral Phenomena"* —, "The Causal Body and the Ego"* —, "The Etheric Double"* —, "The Mental Body"* Samael Aun Weor, "The Esoteric Course of Alchemical Kabbalah".