John Hammergren Books

Skin In The Game: How Putting Yourself First Today Will Revolutionize Health Care Tomorrow

By Phil Harkins, John Hammergren, John Hammergren And Phil Harkins

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Did You Ever Notice That You Always Seem To Come Last In Our Health Care System, With Its Mega-hospitals, Giant Pharmaceutical Companies, Billion-dollar Insurance Providers, And Multi-layered Gover...

Skin In The Game

By Phil Harkins, John Hammergren

Average: 0.00, 0 Ratings

Skin In The Game

By Phil Harkins, John Hammergren, John Hammergren And Phil Harkins

Average: 0.00, 0 Ratings

While The American Health Care System Has Consistently Been Criticized For Its Noticeable Detriments, Few Have Taken The Time To Recognize The Significant Benefits And Potential Of This System. But...

Skin In The Game

By Phil Harkins, John Hammergren, John Hammergren And Phil Harkins

Average: 0.00, 0 Ratings

While the American health care system has consistently been criticized for its noticeable detriments, few have taken the time to recognize the significant benefits and potential of this system. But...

Her Health, Her Lifetime, Our World: Unlocking The Potential Of Adolescent Girls And Young Women

By Helene Gayle, John Hammergren, Helene D. Gayle

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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.