Mark Christensen Books

PERS Coach 2 Excel
PERS Coach 2 Excel

By Mark Christensen

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Supervisor Boot Camp 2
Supervisor Boot Camp 2

By Mark Christensen

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HR Basics
HR Basics

By Mark Christensen

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Moxie Workbook
Moxie Workbook

By Mark Christensen

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Leadership Boot Camp 1
Leadership Boot Camp 1

By Mark Christensen

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Fundamentals of Corporate Finance
Fundamentals of Corporate Finance

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Umpqua Core Skills
Umpqua Core Skills

By Mark Christensen

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Project Leader Tools
Project Leader Tools

By Mark Christensen

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Related Articles from our Blog

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.

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