Charles B. Roth Books

Secrets of Closing Sales

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The #1 bestseller on the art of closing sales is now fully updated to meet the challenges of today’s competitive new sales environment—with 53 case studies drawn from real life. The sixth edition...

Secrets Closing Sales

By Roth Alexander

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Secrets of closing sales

By Charles B. Roth

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Secrets of closing sales

By Charles B. Roth

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The Key to Your Personality

By Charles B. Roth

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The blockbuster complex

By Thomas Whiteside

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How to Manage and Help Salesmen

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The Key to Your Personality

By Charles B. Roth

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Secrets of Closing Sales

By Roy Alexander, Charles B. Roth, Alexander Roy

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Kou dao qian lai

By Luo Shi Roth Charles B.

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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.