Olphaert Den Otter Books

Aarde en wereld

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De schilderijen van kunstenaar Olphaert den Otter (1955) zijn uiterst actueel in een tijd waarin de discussies over klimaat - en in het bijzonder de menselijke invloed op desastreuze klimaatverande...

World stress painting

By Marja Bosma

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Sinds 2009 schildert Olphaert den Otter met enige regelmaat een World Stress Painting. Voor deze schilderijen op papier haalt hij zijn inspiratie uit de ons dagelijks confronterende nieuwsfoto's va...

S k morf

By Olphaert Den Otter

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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.