Juan Estruch Books

Saints and Schemers: Opus Dei and Its Paradoxes

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The Roman Catholic organization known as Opus Dei seems to attract either virulent criticism or extravagant praise. It has been attacked as a "secret society," an "ecclesiastical mafia," and a cult...

Saints and Schemers

By Joan Estruch

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Crec recordar

By Joan Estruch Gibert

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L' Opus Dei i les seves paradoxes

By Juan Estruch

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Suicidios.

By Joan Estruch I Gibert

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Santos y pillos

By Juan Estruch

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Sociologia de una profesion

By Juan Estruch

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Plegar de viure

By Juan Estruch

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Les Noves formes de religiositat

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Ciencia-creencias

By Juan Rubio Cardiel

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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.