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

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

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"An investigation into experiences of other realms of existence and contact with otherworldly beings"--Provided by publisher.

DMT The Spirit Molecule

By Arthur Morey, Rick Strassman MD

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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.