Louise Perrotta Books

His Word Is Among Us

By Louise Perrotta

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A Book of Grace Filled Days 2004 Calendar

By Louise Perrotta

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Mateo 1 2 Lucas 1 2

By Louise Perrotta

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Help me pray

By Louise Perrotta

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Wisdom from the Lives and Letters of St Francis de Sales and Jane de Chantal

By Louise Perrotta

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Live Jesus! Was the motto of St. Francis de Sales and St. Jane de Chantal. As they did for so many others, these master spiritual directors can guide you gently and lovingly to Jesus, so that he ca...

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.