1. Tihkal :
Author: Alexander Shulgin, Ann Shulgin
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Hallucinogenic drugs,Tryptamine

2. Tihkal :
Author: Alexander Shulgin, Ann Shulgin
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Hallucinogenic drugs,Tryptamine
