William S. Root Books

Commonsense Bidding

By William S. Root

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INTRODUCTION TO BIDDING.

By William S. Root

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The ABCs of Bridge

By William S. Root

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William S. Root, winner of many national bridge championships, premier bridge teacher, author of classic bridge books, and recently elected to the Bridge Hall of Fame, is one of America's foremost...

The Play of the Hand

By William S. Root

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Modern bridge conventions

By William S. Root

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Defensive Bridge Play Complete

By William S. Root

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Commonsense Bidding

By William S. Root

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How To Play A Bridge Hand

By William S. Root

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Fun with Games of Rummy America s Most Popular Game Including Canasta Bolivia Samba and All Other Popular Forms of Canasta Gin Rummy Contract Ru

By William S. Root

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How to Defend a Bridge Hand

By William S. Root

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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.