Thomas R. Van Devender Books

The Sonoran Desert Tortoise

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"The mixed grass and shrub vegetation known to scientists as desert grassland is common to the basins and valleys that skirt the mountain ranges throughout southwestern North America, extending fro...

Gentry's Rio Mayo plants

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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...

The Sonoran Desert Tortoise

By Thomas R. Van Devender

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Packrat Middens

By Julio L. Betancourt, Thomas R. Van Devender

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Cactaceas De Sonora Mexico

By Thomas R. Van Devender, Rafaela Paredes Aguilar

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Mayo Ethnobotany

By Thomas R. Van Devender, David Yetman

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Sonoran Desert Tortoise

By Thomas R. Van Devender

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Packrat Middens

By Paul S. Martin, Julio L. Betancourt, Thomas R. Van Devender

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Gentry s Rio Mayo Plants

By Paul S. Martin, Thomas R. Van Devender, David Yetman, Philip D. Jenkins, Mark E. Fishbein

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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.