Michael Lejeune Books

Verschlossen Und Aufgeschlagen Die Schlosser Des Marienschreins Und Die Heiligtumsfahrt Zu Aachen Reflections German Edition

By Michael Lejeune, Christoph Stender

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Business Blog Bites

By Michael Lejeune

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Business Coaches Playbook

By Michael Lejeune

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Game Changers for Government Contractors

By Michael Lejeune, Joshua Frank

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Game Changers will provide you with powerful tactics and strategies for winning government contracts. This book is a ground-breaking collaboration from 29 of the Nation's leading authorities on gov...

Shame the Devil

By Michael Lejeune, Abigail Krisniski

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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.