William John McGee Books

Trails to Tiburon

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"When William John McGee set out from Washington, D.C., for the Sonoran Desert in 1894, he was inspired by a passion for adventure as much as a thirst for knowledge. McGee lived in an era when disc...

The Seri Indians of Bahia Kino and Sonora, Mexico

By William John McGee

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Siouan Indians

By William John McGee

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The Siouan Indians

By William John McGee

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Siouan Indians

By William John McGee, The Perfect The Perfect Library

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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.