Michael Backes Books

Cannabis Pharmacy: The Practical Guide to Medical Marijuana -- Revised and Updated

By Michael Backes

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Cannabis Pharmacy Lib E

By Andrew Weil MD, Ron Butler Jr, Michael Backes, Jack D McCue MD

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Cannabis Pharmacy

By Michael Backes

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Cannabis pharmacy

By Michael Backes

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"In Cannabis Pharmacy, expert Michael Backes presents a comprehensive resource for understanding and using medical marijuana. In this essential guide, Backes provides information on how cannabis wo...

Cannabis Pharmacy

By Michael Backes

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Figuren der romantischen Vision

By Michael Backes

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Cannabis Pharmacy

By Michael Backes, Andrew Weil

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Cannabis Pharmacy

By Michael Backes, Andrew Weil

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Information Security

By Stefanos Gritzalis, Bart Preneel, Michael Backes, Sokratis K. Katsikas

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Computer Security ESORICS 2009

By Michael Backes

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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.