Tom McGowen Books

Gran libro del hombre prehistorico

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A brief introduction to the evolution and characteristics of prehistoric people from apelike prehumans to modern human beings.

El gran libro de reptiles

By Tom McGowen

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Discusses the characteristics of reptiles including snakes, turtles and lizards.

Collins Book of Prehistoric Animals

By Tom McGowen, Rod Ruth

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Collins Book of Prehistoric People

By Tom McGowen, Rod Ruth

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Collins Book of Sharks

By Tom McGowen, Rod Ruth

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Collins Book of Reptiles

By Tom McGowen, Rod Ruth

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AfricanAmericans in the Old West Cornerstones of Freedom Paperback

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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.