John Grafton Books

New York in the nineteenth century

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Baseball picture quiz book

By Bert Randolph Sugar

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More than 200 questions, many with photographic clues, test the reader's knowledge of baseball trivia.

The American West in the Nineteenth Century

By John Grafton

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Listen Read The Monkey s Paw Listen Read

By John Grafton

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The Declaration of Independence and Other Great Documents of American History 1775-1865

By John Grafton

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The Civil War: A Concise History and Picture Sourcebook

By John Grafton

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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.