Rick Strassman MD Books

DMT The Spirit Molecule

By Rick Strassman MD

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DMT and the Soul of Prophecy

By Rick Strassman MD, Mel Foster

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Inner Paths To Outer Space: Journeys To Alien Worlds Through Psychedelics And Other Spiritual Technologies

By Rick Strassman, Ede Frecska, Slawek Wojtowicz, Luis Eduardo Luna, Rick Strassman MD, Rick Strassman MD, Slawek Wojtowicz, Luis Eduardo Luna, Ede Frecska

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Inner Paths to Outer Space: Journeys to Alien Worlds through Psychedelics and Other Spiritual TechnologiesRick Strassman, Wojtowicz Slawek, Luna Luis Eduardo, Frecska Ede0 / 0 1 comment An investig...

DMT The Spirit Molecule

By Arthur Morey, Rick Strassman MD

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The Psychedelic Handbook: A Practical Guide To Psilocybin, LSD, Ketamine, MDMA, And DMT/Ayahuasca

By Rick Strassman, Rick Strassman MD

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Learn everything you need to know about psychedelics with this ultimate guide packed with information on popular psychedelic drugs like psilocybin, ketamine, MDMA, DMT and LSD —plus practical ti...

The Psychedelic Handbook

By Rick Strassman, Rick Strassman MD

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Learn everything you need to know about psychedelics with this ultimate guide packed with information on popular psychedelic drugs like psilocybin, ketamine, MDMA, DMT and LSD —plus practical ti...

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.