Sigrid Heuck Books

Rebecca, living in an orphanage in Germany during World War II, finds her only refuge with a boy hiding out in a nearby cornfield, where their imagination lets them retreat into a fantasy world of...

The stolen apples

By Sigrid Heuck

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A rebus tale relating the adventures of a pony and a bear who go in search of the apples stolen from an apple tree.

Buffalo Man and Golden Eagle

By Sigrid Heuck

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Two friends, a cowboy and an Indian, set out to search for the horse seen in their dreams.

The hideout

By Sigrid Heuck

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Rebecca, living in an orphanage in Germany during World War II, finds her only refuge with a boy hiding out in a nearby cornfield, where their imagination lets them retreat into a fantasy world of...

The fabulous illustrations in this book set the story of a captive owl against a background of medieval Europe. The rare bird, traveling with a circus, is sheltered and fed. it has forgotten how to...

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.