- Author: Carl A.P. Ruck Mark Alwin Hoffman
- Language: English
- Year: 2011
- Author: Carl A.P. Ruck Mark Alwin Hoffman
- Language: English
- Year: 2011
- Author: R. Gordon Wasson Albert Hofmann Carl A. P. Ruck
- Language: Spanish
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- Language: Spanish
- Year: 2014
El camino a Eleusis
epub
- Author: Albert Hofmann & Robert Gordon Wasson & Carl A. P. Ruck
- Language: Spanish
- Year: 1978
- Author: Robert Gordon Wasson Stella Kramrisch Carl A. P. Ruck Jonathan Ott
- Language: English
- Year: 1992
- Author: Robert Gordon Wasson Albert Hofmann Carl A. P. Ruck
- Language: English
- Year: 1978