Timothy Keller Books

Christians are taught in their churches and schools that prayer is the most powerful way to experience God. But few receive instruction or guidance in how to make prayer genuinely meaningful. In Pr...

God's Wisdom for Navigating Life

By Timothy J. Keller, Timothy Keller With Kathy Keller

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From pastor and New York Times bestselling author Timothy Keller comes a beautifully packaged, yearlong daily devotional based on the Book of Proverbs.Proverbs is God’s book of wisdom, teachi...

Dioses Falsos

By Timothy J. Keller

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Iglesia centrada

By Timothy J. Keller

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Uncommon Ground

By Timothy J. Keller, John Inazu

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Resources for deacons

By Timothy J. Keller

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The Reason for God and The Prodigal God

By Timothy Keller

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O love that will not let me go

By Nancy Guthrie

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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.