- Author: Terence McKenna
- Language: Czech
- Year: 1999
- Author: James Robert Nielsen
- Language: English
- Year: 1986
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- Author: Peter T. Furst
- Language: English
- Year: 1992
- Author: Salvador Roquet Pierre Favreau
- Language: Spanish
- Year: 1981
- Author: Vít Pokorný
- Language: English
- Year: 2018
