Paul S. Martin Books

Indians Before Columbus

By Paul S. Martin

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Indians Before Columbus Twenty Thousand Years of North American History Revealed by Archeology

By Paul Sidney Martin

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The archaeology of Arizona

By Paul Sidney Martin, Martin Paul S.

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Twilight of the Mammoths

By Paul S. Martin

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Twilight of the Mammoths

By Paul S. Martin

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The Last 10 000 Years

By Paul S. Martin

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The Last Ten Thousand Years

By Paul S. Martin

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The Rio Mayo region of northwestern Mexico is a major geographic area whose natural history remains poorly known to outsiders. This new book updates and amends Howard Scott Gentry's Rio Mayo Plants...

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.