John DeRosa Books

Days in Collision Faith and Patience

By John DeRosa

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Days in Collision Faith and Patience

By John DeRosa

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Dream Create Explore

By John De Rosa

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Wisdom And Wonder: How Peter Kreeft Shaped The Next Generation Of Catholics

By Jackie Francois-Angel, Matthew Warner, Blake Britton, Matthew Becklo, Bobby Angel, Trent Horn, Logan Paul Gage, Pat Flynn, Michael J. Gormley, Brandon Vogt, John DeRosa, Taylor Patrick O'Neill, Douglas Beaumont, Tyler Blanski, Matthew Nelson, Rachel Bulman, Fredric Heidemann, JonMarc Grodi, Jason L Reed

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Few figures have impacted the rising generation of Catholics more than Peter Kreeft, the widely respected philosophy professor and prolific bestselling author of over 80 books. Through his writings...

One Less God Than You: How To Answer The Slogans, Clichès, And Fallacies That Atheists Use To Challenge Your Faith

By John DeRosa

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"If you have spent any time on Twitter, in a college quad, or at the dinner table with a freshman philosophy major, you're probably familiar with the litany of slogans that religious skeptics emplo...

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.