John D. Williams Books

Word nerd

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"Explores anagrams, palindromes, the highest-scoring Scrabble plays of all time, [and] the birth of the World Scrabble Championship, as well as many of the more colorful figures that inhabit this s...

Here to Dare 10 Gay Black Poets

By Assotto Saint

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Timberland Voyage

By John D Williams

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1998 P A D Official Scrabble Calen

By Williams John D.

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Word Nerd

By Williams John D. Jr., Williams John D.

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After the Countercoup

By United States Army Command And College Staff

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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.