Paul Groenendijk Books

Wie Rotterdam zegt, denkt aan bouwen. Na het vernietigende bombardement van 14 mei 1940 werd de stad letterlijk opnieuw opgebouwd. Dat bombardement wordt - pas sinds 2008! - officieel herdacht. De...

Amsterdam Architecture City

By Peter De Winter, Paul Groenendijk

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Het lied van Den Haag

By Paul Groenendijk

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Villa Gestel, Rotterdam, J.H. van den Broek

By Paul Groenendijk, Piet Vollaard

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Adolf Loos

By Paul Groenendijk

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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.