Richard Rudgley

Essential Substances

Barbarians

The alchemy of culture

Pagan Resurrection

Secrets of the Stone Age

Encyclopedia of Psychoactive Substances

Wildest Dreams

The return of Odin

Alchemia kultury

Abenteuer Steinzeit

Lost Civilisations of the Stone Age

Lost civilisations of the Stone Age

Pasos Lejanos, Los

Lexikon der psychoaktiven Substanzen. Ein kulturhistorischer Trip

Enciclopedia De Las Substancias Psicoactivas