Nico Roymans Books

Een Bataafse gemeenschap in de wereld van het Romeinse rijk

By Stijn Heeren, Ton Derks, Nico Roymans

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De Keltische goud en zilverschat van Amby Gemeente Maastricht

By Nico Roymans

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An overview of the silver and gold coins from the first century bevore Christ found just outside of Amby in 2008 by an amateur archaeologist.

Opgravingen in Kampershoek en de Molenakker te Weert

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Opgravingen in Kampershoek en de Molenakker te Weert

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Ethnic Identity and Imperial Power

By Nico Roymans

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Tribal societies in northern Gaul

By Nico Roymans

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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.