Walter Carl Hartwig Books

The Primate Fossil Record Cambridge Studies in Biological and Evolutionary Anthropology

By Walter Hartwig

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The Primate Fossil Record Cambridge Studies in Biological and Evolutionary Anthropology

By Walter Carl Hartwig

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Fundamental Anatomy

By Walter Hartwig

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Med school Rx

By Walter Carl Hartwig

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"Each year more and more people are entering medical school, yet many have little or no idea on how to get the most out of the programs offered. Students can now turn to Med School Rx, which will t...

Med school Rx

By Walter Carl Hartwig

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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.