Charles Henderson Books

German Shorthaired Pointer Activities German Shorthaired Pointer Tricks, Games and Agility. Includes

By Charles Henderson

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Silent Warrior

By Charles Henderson

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The author of the bestselling Vietnam War memoir Marine Sniper continues the incredible true story of Sergeant Carlos Hathcock...In the United States Marine Corps, the most dangerous job in co...

Marine Sniper

By Charles Henderson

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The explosive true story of Sergeant Carlos Hathcock, a legendary Marine sniper in the Vietnam War.There have been many Marines. There have been many marksmen. But there has only been one Sergeant...

Terminal Impact

By Charles Henderson

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From the author of Marine Sniper—the classic true account of Sergeant Carlos Hathcock—comes a gripping and gritty new novel about a sniper on the trail of al-Qaeda terrorist Abu Musab a...

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.