Cutura y Droga, no. 8-9, 2002
Universidad de Caldas
Manizales, Colombia
Pharmacophilia or the Natural Paradises
Jonathan Ott
Natural Products Co. 1997
Spanish Edition published by Phantastica
Barcelona 1998
The Age of Entheogens & The Angel's Dictionary
Jonathan Ott
Natural Products Co. 1995
Cutura y Droga, no. 9, 2003
Universidad de Caldas
Manizales, Colombia
Anadenanthera. Visionary Plant of Ancient
South America,
Constantino Manuel Torres and David B. Repke
Routledge Press 2006
Plants of the Gods, by Richard Evans Schultes
Albert Hofmann, Christian Rätsch
Japanese edition 2007 (painting at top right).
