Roger Warner Books

Angkor

By Michael Freeman, Micheal Freeman, Roger Warner, David Larkin

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A Cambodian Odyssey

By Haing Ngor, Roger Warner

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Survival in the Killing Fields

By Haing Ngor, Roger Warner

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Survival in the Killing Fields

By Haing S. Ngor, Roger Warner

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Surviving the Killing Fields Isis Series 12 Audio Cassettes

By Haing S. Ngor, Roger Warner

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Une odyssee cambodgienne

By Haing Ngor., Roger Warner

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Until now, the history of America's war in Vietnam has been incomplete. The origins of that conflict - the most controversial and painful chapter in American history since the Civil War - were in L...

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.