John Woolley Books

God's Promises

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The Political economy of European monetary unification

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As the European Community moves fitfully toward economic integration, the problems underlying planned monetary unification have repeatedly come to the fore, as in the currency crisis of 1992-1993 a...

I am with You Adult Edition

By John Woolley

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The Friendship of Jesus

By John A. Woolley

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God s Secret

By John Woolley

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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.