Robert Vicar Books

First Division Selling

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Encouraging self-awareness and self-development, this study describes the qualities and skills necessary to succeed as a salesperson. It analyzes the selling process, advises on dealing with a numb...

Prospecting For Customers

By Vicar Robert, Robert Vicar

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This guide describes how to transform customer acquisition techniques from a casual collection of names to a fixed and disciplined system which accumulates a bank of prospective customers for immed...

How To Speak & Write Persuasively

By Robert, Vicar, Vicar Robert, Robert Vicar

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Examining the art of effective communication in sales and marketing, this guide explains how to develop an influential and confident style when dealing with customers or making public presentations...

One Foot In The Door

By Robert Vicar

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Foot On The Management Ladder

By Robert Vicar

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Prospecting For Customers

By Vicar Robert, Robert Vicar

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چگونه ديگران را متقاعد کنيم؟ : با گفتن و نوشتن

By Robert Vicar

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Vendedor De Primeira Linha

By Robert Vicar

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Du Démarcheur Au Conseiller

By Robert Vicar

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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.