Dale Ahlquist Books

G.K. Chesterton

By Gilbert Keith Chesterton, Dale Ahlquist

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G. K. Chesterton

By Dale Alquist, Dale Ahlquist

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Knight of the Holy Ghost

By Dale Ahlquist

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Lepanto

By Gilbert Keith Chesterton

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Hilaire Belloc called "Lepanto" Chesterton's greatest poem and the greatest poem of his generation. But not only have English classes neglected this masterpiece of rhyme and meter, History classes...

Common Sense 101

By Dale Ahlquist

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CATHOLICISM

By Robert E. Barron, Fr. Raniero Cantalamessa, Peggy Pandaleon, Paul Murray Op, Dr. Matthew Levering, Dale Ahlquist, Dr. Anthony M. Esolen, Fr. Ian Ker

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Historia de la familia

By Aurora Pimentel, Gilbert Keith Chesterton, Dale Ahlquist

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Universe According to G. K. Chesterton

By Gilbert Keith Chesterton, Dale Ahlquist

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Walking with Father Vincent

By Andrew McNabb, Dale Ahlquist

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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.