Haywood John Books

Atlas des Vikings

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La vie des Vikings, leur organisation sociale, les expéditions, les raids qu'ils accomplirent en Europe.

From Finland to Newfoundland and Jelling to Jerusalem, follow in the wake of the Vikings -- a transformative story of a people that begins with paganism and ends in Christendom. Focusing on key eve...

Chronicles of the ancient world

By Haywood John

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The great migrations

By Haywood John

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The great migrations

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Civil and political history of the State of Tennessee from its earliest settlement up to the year 1796.

By Haywood John

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Encyclopaedia of the Viking age

By Haywood John

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Atlas van de wereldgeschiedenis

By Haywood John

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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.