The psychedelic experience : a manual based on the Tibetan book of the dead
/ Timothy Leary, Ralph Metzner, Richard Alpert ; [with a new introduction by Daniel Pinchbeck]
- New York : Citadel Press , 2007.
- xix, 124 p. ; 23 cm.
"Citadel underground"--Spine. Originally published by Citadel in 1992.