Mark Oestreicher Books

Lecciones Biblicas

By Mark Oestreicher

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Hopecasting

By Mark Oestreicher

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The monumental discovery

By Mark Oestreicher

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The reader's choices control the adventures of a group of friends who make a trip to Washington, D.C., to try out a new camera.

The skinny on parents

By Mark Oestreicher

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4 Views on Pastoring LGBTQ Teenagers

By Shelley Donaldson, Eric Woods, Mark Oestreicher, Nick Elio, Gemma Dunning

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4 Views on Talking to Teenagers about Sex

By Mark Oestreicher

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My School Invert Middle School Survival Series

By Kurt Johnston, Mark Oestreicher

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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.