Keren Ludlow Books

The Topsy Turvies Picture Books

By Keren Ludlow, Francesca Simon

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Jack Tractor

By Keren Ludlow, Willy Smax

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Five more stories about Benny, the kindly tow truck from Smallbills Garage, and his owner Mike McCannick.

The Night I Was Chased by a Vampire

By Kaye Umansky, Keren Ludlow

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The Empty Suit of Armour

By Kaye Umansky, Keren Ludlow

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Jack Tractor Gets Stuck Benny the Breakdown Truck

By Keren Ludlow, Willy Smax

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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.