Roger Lawrence Williams Books

"As we approach the bicentennial of the Lewis and Clark expedition in 2004, attention will inevitably turn to those nineteenth-century explorers who risked life and limb to interpret the natural hi...

A guide to Rocky Mountain plants

By Roger Lawrence Williams

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Napoleon III and the Stoeffel Affair

By Roger Lawrence Williams

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French Botany in the Enlightenment

By R.L. Williams

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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.