Richard G. Hardorff Books

Lakota Recollections of the Custer Fight

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Cheyenne Memories of the Custer Fight

By Robert Wooster

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Hokahey! A Good Day to Die!

By Richard G. Hardorff

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174 p. : 21 cm

The Death of Crazy Horse

By Richard G. Hardorff

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Washita Memories

By Richard G. Hardorff

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"The Battle of the Washita is one of the most tragic - and disturbing - events in American history. On November 27, 1868, the U.S. Cavalry under Lt. Col. George Armstrong Custer attacked a peaceful...

Indian Views Of The Custer Fight

By Richard G. Hardorff

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The Oglala Lakota Crazy Horse

By Richard G. Hardorff

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Lakota Recollections of the Custer Fight

By Richard G. Hardorff

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Hokahey! A good day to die!

By Richard G. Hardorff

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Cheyenne Memories of the Custer Fight

By Richard G. Hardorff

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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.