H.J. Witteveen Books

The Heart of Sufism

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The Indian Sufi master Hazrat Inayat Khan (1882-1927) was the very first teacher to bring Sufism to the Western world. This is the first representative collection of the master's teachings  m...

Sufism in Action

By Hendrikus Johannes Witteveen, H.J. Wittveen, H. J. Witteveen

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De magie van harmonie

By H.J. Witteveen

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Autobiografie van de VVD-politicus, onder meer mede-oprichter van het Centraal Planbureau en minister van Financiën in het kabinet-De Jong.

The meaning of our enormous structural balance of payments deficit

By H. Johannes Witteveen

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The Heart of Sufism

By H.J. Witteveen

Average: 0.00, 0 Ratings

The Indian Sufi master Hazrat Inayat Khan (1882–1927) was the very first teacher to bring Sufism to the Western world. This is the first representative collection of the master's teachings &#...

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.