John Warley Books

The moralist

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"Just when you thought America was falling off a cliff, along comes Fran to tell it like it was and is ... Fran's goals are modest--get the sink fixed, acquire health insurance, steer clear of a le...

The Moralist II

By John Warley

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Bethesda's child

By John Warley

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Senator Martin Harmon, the leading spokesperson for a law designed to prevent abuses in genetic engineering, seek's his party's nomination for vice-president and finds himself on a collision course...

Bethesda s child

By John Warley

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Bethesda's child

By John Warley

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A southern girl

By John Warley

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Southern Girl a

By John Warley

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Southern Girl

By Therese Anne Fowler, John Warley

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Southern Girl

By John Warley

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Southern Girl

By Therese Anne Fowler, John Warley

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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.