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   Gastón Guzmán
   Gastón Guzmán is a Mexican mycologist and anthropologist. He is considered the world`s foremost authority on the genus Psilocybe. He was born in Xalapa, Veracruz, in 1932. His interest in mycology began in 1955 when as a graduate student he decided to update his school`s (National Polytechnic Ins...
   Found op http://en.wikipedia.org/wiki/Gastón_Guzmán
   
   

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