Loek Koopmans Books

Daniel's grandfather insists that the story about treasure at the end of a rainbow is only a fairy tale, but when he and Daniel encounter a leprechaun after spending a day looking for the gold, he...

The gold at the end of the rainbow

By Wolfram Hanel

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Daniel's grandfather insists that the story about treasure at the end of a rainbow is only a fairy tale, but when he and Daniel encounter a leprechaun after spending a day looking for the gold, he...

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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.

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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.