Mary Lea Hill Books

Complaints of the Saints

By Mary Lea Hill

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Saint Edith Stein (Saint Teresa Benedicta of the Cross, OCD)

By Mary Lea Hill

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A biography of the Jewish philosopher and convert to Catholicism who was put to death at Auschwitz during World War II and canonized by Pope John Paul II in 1998.

Basic catechism

By Mary Lea Hill

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Saint Edith Stein

By Mary Lea Hill

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Blessed Are the Stressed

By Mary Lea Hill

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Growing in Virtue One Vice at a Time

By Mary Lea Hill

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Life s Purpose

By John Henry Cardinal Newman, Mary Lea Hill

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Path of Holiness

By Catherine Siena, Mary Lea Hill

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Prayer and you

By Mary Lea Hill

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Prayer and you

By Mary Lea Hill

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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.