Willem Te Slaa Books

Ferdinand Bol

By Willem Te Slaa, Tonko Grever, Quirine Van Aerts

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"Ferdinand Bol wordt vaak in één adem genoemd met zijn wereldberoemde meester Rembrandt. Na zijn leertijd bij Rembrandt ontwikkelde hij zich echter tot één van de belangrijkst en succesvolste schil...

Branden of betalen

By Willem Te Slaa, Lodewijk Gerretsen, R. E. De Bruin

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In the summer of 1672, the panic in Utrecht was complete. Overland, the Republic of the United Netherlands is overrun by a gigantic army, led by the French king Louis XIV. The year went down in the...

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.