Julek Heller Books

Giants

By Juan Wijngaard, Julek Heller, Carolyn Scrace, Carolyn Franklin Scrace, David Larkin

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Knights

By Julek Heller, Deirdre Headon

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Giants

By Larkin David, Julek Heller

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King Arthur and the legends of Camelot

By Molly Perham

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The Anthropos Specter Beast

By Tadeusz Konwicki, Julek Heller

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Amid warnings of the earth's end Peter encounters the Anthropos- Specter-Beast and travels with the Investigator Dog on mysterious trips into the Universe.

King Arthur and His Knights

By Deirdre Headon

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King Arthur and Legends of Camelot

By Molly Perham, Julek Heller

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Dornroschen. Ein Bilderbuch mit Musik.

By Julek Heller, Catherine Storr, Peter Iljitsch Tschaikowsky, Alan Gout

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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.