William S. Root Books

Neither for beginners nor for experts but for the 90 percent of players in between, How to Play a Bridge Hand includes more than 300 of bridge master William Root's favorite hands. Hailed by the Am...

Modern Bridge Conventions

By Richard Pavlicek, William S. Root

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This easy-to-follow book covers in detail more than 50 of the most practical bridge conventions in use today. A glossary, which also serves as an index, lists more than 250 popular conventions, tre...

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.