Michael Pennock Books

Understand Catechism Creed

By Mike Corrado, Michael Pennock

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Your Faith and You

By Michael Pennock, James Finley

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Presents the basic beliefs of contemporary Catholicism as reflected in Vatican II statements and modern scriptural studies.

Moral problems

By Michael Pennock

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Presents a systematic method, based in Catholic morality, for resolving problems concerning such issues as drugs, alcohol, premarital sex, abortion, euthanasia, poverty, prejudice, and the arms race.

Moral Problems

By Michael Pennock

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Sacraments and You

By Michael Pennock, Pennock

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The New Testament

By Michael Pennock

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New Testament

By Michael Francis Pennock

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Your church & you

By Michael Pennock

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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.