Greg Critser Books

National Geographic traveler

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This book is a description and travel guidebook of California, United States. It will assist travellers with their itinerary and plans.

Mix the latest and most rigorous scientific research, irrepressible old-fashioned entrepreneurship, and the ancient human desire to live forever (or at least a lot longer) and the result is today’s...

Generation Rx

By Greg Critser

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Fat Land

By Greg Critser

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Skinny Rules

By Bob Harper, Greg Critser

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Fat Land

By Greg Critser

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Generation RX

By Greg Critser

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California National Geographic Traveler

By Christopher Baker, Greg Critser

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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.