Hildegard Muller Books

The cowboy

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When Anna pretends to teach her toy dog, Toto, to swim, he is carried too far out by a big wave but a boy in a cowboy hat comes to the rescue.

The Cowboy

By Written Illustrated By Hildegard Muller

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Anna thinks the boy in the cowboy hat looks silly—but he's the only one who can save the day in this Guided Reading Level F story. It's a beautiful day! Anna and her toy dog, Toto, are all s...

Mr. Cool Cat s Whiskers

By Hildegard Muller

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Mr. Cool Cat s Whiskers

By Hildegard Muller

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Advents und Weihnachtsgeschichten. Ab 9 J. .

By Sonja Hartl, Hildegard Muller

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Sitzt ein Zwerg auf dem Berg.

By Christa Zeuch, Hildegard Muller

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Ich bin hier bloss das Kind

By Jutta Richter, Hildegard Muller

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Mein Kinder ABC. Ab 6 J. .

By Manfred Mai, Hildegard Muller

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Barenfreunde.

By Hildegard Muller

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Katers Kase.

By Hildegard Muller

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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.