Michael G. Lawler Books

Sacrament of service

By Patrick McCaslin

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Symbol and sacrament

By Michael G. Lawler

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Church

By Thomas J. Shanahan, Michael G. Lawler

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"A series of essays which addresses theological, ministerial, canonical, and liturgical issues regarding the ministry of the deacon, as well as the symbols and texts in the ordination liturgy for d...

Marriage and sacrament

By Michael G. Lawler

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Marriage and the Catholic Church

By Michael G. Lawler

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Raid on the Inarticulate

By Michael G. Lawler

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Sacraments As Prophetic Symbols

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What Is And What Ought To Be

By Michael G. Lawler

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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.