Margaret Haffner Books

A Murder of Crows

By Margaret Haffner

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Snowblind

By Margaret Haffner

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Fearless Jake

By Margaret Haffner

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Fearless Jake

By Margaret Haffner

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Tells of Jake's imaginary brave adventures on his way to school.

Jeremie Sans Peur

By Margaret Haffner

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Jérémie doit marcher pour se rendre à l'école. Il enfourche sa moto, traverse une rivière déchaînée, affronte les alligators, le désert, un terrible serpent à sonnette ... Une évocation réaliste de...

Snowblind

By Margaret Haffner

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A killing frost

By Margaret Haffner

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Mary s Tree

By Margaret Haffner, Haftner

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Fearless Jake

By Margaret Haffner

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Killing Frost

By Margaret Haffner

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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.