Robert Stackpole Books

Dr. Robert Stackple, STD, Professor of Theology at Redeemer Pacific College and Director of the John Paul II Institute of Divine Mercy, helps explain the role of the papacy as well as its origins i...

St. Peter Lives In Rome

By Robert Stackpole, Dr. R. Stackpole

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Divine Mercy A Guide From Genesis To Benedict XVI

By Robert Stackpole

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"This revised edition takes you on a tour of Divine Mercy throughout salvation history, through the Old and New Testaments, in the writings of the Church's great theologians, and in the lives and w...

Mary: Who She Is And Why She Matters

By Robert Stackpole, Dr Robert Stackpole

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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.