Douglas H. Chadwick Books

The largest creatures ever to inhabit the Earth, whales have long inspired awe in humans. But because they spend virtually all of their time beneath the ocean surface, little has been known about t...

Yellowstone to Yukon

By Rick Bass, Douglas H. Chadwick, Robert F. Kennedy Jr., David Suzuki, Florian Schulz

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Crown of the Continent

By Douglas H. Chadwick, Charles Jonkel, Ivan Doig, Ralph Waldt

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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.