Terence McKenna Books

True Hallucinations: Being an Account of the Author's Extraordinary Adventures in the Devil's Paradise

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A recounting of the author's 1971 journey in the Amazon basin in search of a mythical shamanistic hallucinogen and his experiences after finding it.

The Invisible Landscape: Mind, Hallucinogens, and the I Ching

By Terence McKenna

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True Hallucinations: Being an Account of the Author's Extraordinary Adventures in the Devil's Paradise

By Terence McKenna

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Tripping

By Charles Hayes

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“Provides the much needed ‘coming out of the closet’ that the psychedelic movement has lacked. These stories will captivate, inspire, caution, and educate. This courageous book exceeds expectations...

AMANITA MUSCARIA

By Andrija Puharich, JORDAN MAXWELL, JOHN MARCO ALLEGRO, Robert Gordon Wasson, Terence McKenna, COLIN RIVAS

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Food of the Gods

By Terence McKenna

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Food of the Gods

By Terence McKenna

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“Deserves to be the modern classic on mind-altering drugs and hallucinogens.”—The Washington Post Ethnobotanist Terence Mckenna, hailed by Tom Robbins as “the most important—and most entertaining—v...

Food of the gods

By Terence McKenna

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True hallucinations

By Terence McKenna

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Food of the Gods

By Terence McKenna

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.