Charlie Samuels Books

World War II source book

By Charlie Samuels

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Machines that Won the War

By Charlie Samuels

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Machines and weaponry of World War II

By Charlie Samuels

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A high-interest, highly visual introduction to key military machines.

Propaganda

By Charlie Samuels

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Describes the documentation published by different groups during World War II that was used to persuade civilians, soldiers, and even the enemies to support that group's cause.

Machines that Won the War World War I

By Charlie Samuels Author

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World War II Sourcebook

By Charlie Samuels

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Mapping the Physical World Mapping in the Modern World

By Charlie Samuels

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Mapping the Physical World

By Charlie Samuels

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Astonishing Bodies

By Charlie Samuels

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Forgotten Cities Mystery Files

By Charlie Samuels

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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.