Helen Hancocks Books

Penguin in Peril

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Three hungry cats. One little penguin. The odds don’t look good.With bare cupboards and hungry bellies, three cats steal a penguin to catch them fish. A hilarious sequence of events unfolds...

William the missing masterpiece

By Helen Hancocks

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Debonair cat-detective William finds himself at the center of a mysterious theft when theMona Cheesa is stolen from a Parisian gallery. Can William put the clues together and solve the crime? Fans...

William Heads to Hollywood

By Helen Hancocks

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A glorious sequel to WILLIAM AND THE MISSING MASTERPIECE! Someone has stolen the Gold Cuckoo Awards from the famous Cuckoo film studios, and only William is debonair enough to schmooze the stars an...

William Heads to Hollywood

By Helen Hancocks

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Penguin in peril

By Helen Hancocks

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With bare cupboards and hungry bellies, three cats steal a penguin to catch fish for them. A hilarious sequence of events unfolds as the penguin makes his escape, becoming mistaken for a nun and a...

Penguin in peril

By Helen Hancocks

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With bare cupboards and hungry bellies, three cats steal a penguin to catch fish for them. A hilarious sequence of events unfolds as the penguin makes his escape, becoming mistaken for a nun and a...

Serlok Hollywood da

By Helen Hancocks

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Serlok ve Kayip Basyapit

By Helen Hancocks

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Pingwin w opalach

By Helen Hancocks

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Como cuidar de tu humano

By Susana Rodriguez Alvarez, Kim Sears, Helen Hancocks

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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.