Gloria Whelan Books

After the Train

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Ten years after the end of the Second World War, the town of Rolfen, West Germany, looks just as peaceful and beautiful as ever, until young Peter Liebig discovers a secret about his past that lead...

The lost child

By Gloria Whelan

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After the Train

By Gloria Whelan

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After the Train

By Gloria Whelan

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After the Train

By Gloria Whelan

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After the Train

By Gloria Whelan

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After the Train

By Gloria Whelan

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After the Train

By Gloria Whelan

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Angel on the Square

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Angel on the Square

By Gloria Whelan

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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.