Ralph Metzner

Die Kröte und der Jaguar

Handbuch für nachhaltige Erfahrungen mit Entheogenen

The Psychedelic Experience

Searching for the Philosophers' Stone

The Ayahuasca Experience

Overtones and Undercurrents

Seeking Your Loved One on the Other Side (Unabridged)

Maps of Consciousness (Unabridged)

The Psychedelic Reader : Classic Selections from the Psychedelic Review, The Revolutionary 1960's Forum of Psychopharmacological Substances

Metamorphosis