Mark H. McCormack Books

What they don't teach you at Harvard Business School about executive travel

By Mark H. McCormack

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Dunhill world of professional golf 1983.

By Mark H. McCormack

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Mark H. McCormack on Managing

By Mark H. McCormack

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What They Don't Teach You at Harvard Business School

By Mark H. McCormack

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This business classic features straight-talking advice you’ll never hear in school.   Featuring a new foreword by Ariel Emanuel and Patrick Whitesell  Mark H. McCormack, one of...

What They Don't Teach You at Harvard Business School

By Mark H. McCormack

Average: 0.00, 0 Ratings

This business classic features straight-talking advice you’ll never hear in school.   Featuring a new foreword by Ariel Emanuel and Patrick Whitesell  Mark H. McCormack, one of...

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.