William Douglas Books

Effective Dieting for Longer Life

By William Douglas

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From Healthy Eating to Healthy Living

By William Douglas

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Alexander la Vay

By William Douglas

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Las 25 Leyes Biblicas para El exito

By William Douglas

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Of Men and Mountains

By William Douglas

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William O. Douglas was one of that rare mix of man that helped define America, a judge of the supreme court and also a lifelong outdoorsman. This is his story in his words and conveys the joy he fe...

Sum of All Our Anger

By William Douglas

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Sum of All Our Anger

By William Douglas

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Sum of All Our Anger

By William Douglas

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Of Men and Mountains

By William Douglas

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Hope Is All I Have

By Satish N. Nadig FACS, William Douglas

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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.