Joe Haldeman Books

Vietnam and other alien worlds

By Joe Haldeman

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Dwarves

By Mayfair Games

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Tower of Magicks Advanced Dungeons and Dragons Role Aids

By Bill Fawcett

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A Separate War and Other Stories

By Joe Haldeman

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6 years of stories from the Hugo and Nebula Award-winning author. Here are fifteen stories-never before collected-that tread upon familiar Haldeman territory, as well as explore the outer reaches...

Future Weapons of War Baen Book

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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.