Greg Tobin Books

The Good Pope: The Making of a Saint and the Remaking of the Church--The Story of John XXIII and Vatican II

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On November 23, 1958, Cardinal Angelo Giuseppe Roncalli, the son of peasant Italian farmers, became Pope John XXIII. Widely expected to be a transitional pope, John surprised the Church hierarchy a...

The good Pope

By Greg Tobin

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Jericho

By Greg Tobin

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Big Horn

By Greg Tobin

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The wisdom of St. Patrick

By Greg Tobin

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Kid Stark

By Greg Tobin

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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.

Greg Tobin Books

Asking

Preview of Asking about Life

Conclave

Council

The Good Pope: The Making of a Saint and the Remaking of the Church--The Story of John XXIII and Vatican II

The good Pope

Jericho

Big Horn

The wisdom of St. Patrick

Kid Stark

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

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